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๒๕๕๔ โดย ครูประชาเล็ต เฉยเทิบ 21101 ใบงานคณิตศาสตร ค21101 ชื่อ นามสกุล..................................................................เลขที.............ชั้น ม. 1/ ..........

# %E0%b9%83%e0%b8%9 a%e0%b8%87%e0%b8%b2%e0%b8%99%20%e0%b8%8421101 m1_1

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### Text of %E0%b9%83%e0%b8%9 a%e0%b8%87%e0%b8%b2%e0%b8%99%20%e0%b8%8421101 m1_1

1. 21101 21101 ............................................................................... . 1/ .......... 2. 21101 1 1 21101 | 1 1 1 3. 1 4 2 5 3 7 4 8 5 ...10 6 ...11 7 ...12 8 ...13 9 14 10 15 11 16 12 17 13 18 14 19 15 20 16 21 17 22 18 23 19 24 20 25 21 26 22 0 127 23 28 24 29 25 31 26 32 27 33 28 35 29 (1)37 30 (2)39 21101 | 1 1 2 4. 31 (1) 40 32 (2) 43 33 44 34 45 35 46 36 47 37 48 21101 | 1 1 3 5. 1 1 12 2 24 3 28 4 32 5 36 6 45 7 48 8 50 9 5410 6211 891212013282143511550621101 | 1 1 4 6. 2 1. 1) 15 51 ..............................................................................................................................................2) 23 47 ..............................................................................................................................................3) 67 93 ..............................................................................................................................................4) 71 17 ..............................................................................................................................................5) 1 100 7 .............................................................................................................................................. 2. 1) 327 ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................2) 551 ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... 21101 | 1 1 5 7. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................3) 719 ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................4) 899 ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................5) 1,117 ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................21101 | 1 1 6 8. 3 1. 2. 3. 21101 | 1 1 7 9. 4 1) 70......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2) 154........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3) 481.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................21101 | 1 1 8 10. 4) 1,254 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................5) 2,730 .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... 21101 | 1 1 9 11. 5 ... ... 1) 16, 28, 32 .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................2) 36, 64, 96 .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................3) 234, 270, 288 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................4) 1,128 1,464 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... 21101 | 1 1 10 12. 6 ... 1) 3 35 49 56 .............................................................................................................................................. 7 ) 35 49 56 ..............................................................................................................................................5 7 8 .............................................................................................................................................. ... 7 ............................................................................................................................................... 7 ............................................................................................................................................... 5 + 7 + 8 = 20 ............................................................................................................................................... ............................................................................................................................................... ..............................................................................................................................................2) 399 575 591 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ..............................................................................................................................................3) 545 1 436 11 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... .............................................................................................................................................. 21101 | 1 1 11 13. 7 ... ... 1) 16, 28, 32 .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................2) 36, 64, 96 .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ...............................................................................................................................................3) 234, 270, 288 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... 21101 | 1 1 12 14. 8 ... 1) 15, 30 45 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... .............................................................................................................................................. ............................................................................................................................................... .............................................................................................................................................. ............................................................................................................................................... ..............................................................................................................................................2) 357 425 7 .............................................................................................................................................. .............................................................................................................................................. .............................................................................................................................................. ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... ............................................................................................................................................... .............................................................................................................................................. ............................................................................................................................................... .............................................................................................................................................. ............................................................................................................................................... .............................................................................................................................................. 21101 | 1 1 13 15. 9 ................. 1) 0 ................. 2) 1 ................. 3) 0 ................. 4) -2 ................. 5) ................. 6) 2.5 ................. 7) 0 5 -5 ................. 8) -7 5 -2 ................. 9) -1, -2, -3, ... 1 ................10) -3 0 3 ................11) ................12) -5 021101 | 1 1 14 16. 10 1. > < 1) -6 -10 2) -2 -1 3) -13 -15 4) -75 -100 5) -20 -10 2. 3 1) -16, -13, -10, ............, ............, ............ 2) -2, -5, -8, ............, ............, ............ 3) -98, -105, -112, ............, ............, ............ 4) -5, -16, -27, ............, ............, ............ 5) -111, -99, -87, ............, ............, ............ 3. 1) -11 -5 -7 ......................................................................................... 2) -1 -21 -15 ......................................................................................... 3) -32 -9 -25 ......................................................................................... 4) -18 -29 -36 ......................................................................................... 5) -17 -6 -20 ......................................................................................... 21101 | 1 1 15 17. 11 1. > < 1) -2 -1 6) -2 -192) -8 87) -12 53) 0 -118) -27 -114) -5 29) 43 -435) 3 010) -32 1 2. 3 1) -5, -10, -15 ............, ............, ............2) -8, -6, -4 ............, ............, ............3) 7, 4, -1 ............, ............, ...........4) 11, 6, 1 ............, ............, ............5) -8, -2, 4............, ............, ............ 3. a 1) a 0............................................................................................................................................................ 2) a ............................................................................................................................................................. 3) a ......................................................................................................................................................... 4) a -1 1 .............................................................................................................................................................21101 | 1 1 16 18. 12 1) 0 0 .................................. 2) 1 -1 .................................. 0 .................................. 3) 5 .................................. 4) a a .................................. 5) 3 .................................. 6) -3 -(-3) .................................. 7) 3 -(-3) .................................. 8) 3 = -(-3) .................................. 9) -(-7) 7 ..................................10) (-(-(-(-9)))) .................................. 21101 | 1 1 17 19. 13 1) 3 0 3 3 .................................. 2) -5 5 -5 0 .................................. 3) 12 -12 .................................. 4) a a 2 = .................................. 2 = 2 2.................................. 2 5)6 = ................................. 6) (4) .................................. 4 7)8= ................................ 8) ( 7 ) = .................... 9) 3 = ..................................10) ( 1) = ..................11) -10, 8, -1 .................................12) 0 = .................................13) x x 99= .................................14) 8 ................................. 815) 7 ................................. 716) 49 ................................. 49 21101 | 1 1 18 20. 14 1. 4 + 3 ......................................... 2. (-4) + (-3). ......................................... 3. (-3) + (-4) ......................................... 2 3 (-4) + (-3) = (-3) + (-4) ......................................................... 4. [(-4) + (-3)] + (-2) ......................................... 5. (-4) + [(-3) + (-2)] ......................................... 4 5 [(-4) + (-3)] + (-2) = (-4) + [(-3) + (-2)] .................................................21101 | 1 1 19 21. 15 1) (-10) + (-8) = .......................................... 2) (-8) + (-10) = .......................................... 3) (-6) + (-3) + (-1) = .................................. 4) [(-6) + (-3)] + (-1) = .................................. 5) (-6) + [(-3) + (-1)] = ................................. 6) [(-6) + (-1)] + (-3) = ................................. 7) (-200) + (-80) + (-5) = ................................. 8) [(-200) + (-80)] + (-5) = ................................. 9) (-200) + [(-80) + (-5)] = .................................10) [(-200) + (-5)] + (-80) = .................................11) (-8) + [(-3) + (-6)] = .................................12) [(-32) + (-17)] + (-23) = .................................13) (-32) + [(-17) + (-23)] =................................. 14) (-45) + [(-55) + (-28)] + (-72) = .................................15) [(-45) + (-55)] + [(-28) + (-72)] = ................................. 21101 | 1 1 20 22. 16 1) 5 + (-2) ............................ 2) (-5) + 2 ............................ 3) 3 + (-3) ............................ 4) (-4) + 4 ............................ 5) (-2) + 5 ............................ 6) 2 + (-5) ............................21101 | 1 1 21 23. 17 1. 1) 1 - 8 = 1 + (-8) = .................................. 2) 9 - 2 = 9 + (-2) = .................................. 3) (-3) - 7 = (-3) + (-7) = .................................. 4) (-4) - (-5) = (-4) + 5 = .................................. 5) 3 - (-2) = 3 + 2 = .................................. 6) 3 - (-11) = 3 + 11 = .................................. 7) (-6) - (-8) = (-6) + 8 = .................................. 8) (-12) - (-8) = (-12) + 8 = .................................. 9) 15 - 15 = 15 + (-15) = ..................................10) (-17) -17 = (-17) + (-17) = .................................. 2. 1) 27 - 30 = ........................................................................... 2) 36 - (-16) = ......................................................................... 3) (-15) - (-12) = ...................................................................... 4) (-42) - 8 = ................................................................... 5) 80 - 90 = .................................................................. 6) (-70) -17 = .............................................................. 7) (-20) - (-12) = ................................................................ 8) -4 - 5 - (-6) = ................................................................. 9) 5 - (-8) - 12 = ................................................................10) -9 - 10 - 11 = ................................................................ 21101 | 1 1 22 24. 18 1. (a + b) - (c - d) 1) a = 5 , b=4,c = -2 .....................................2) a = -2 ,b = -3 ,c=6 .....................................3) a = 1 , b = -2 ,c = -3 .....................................4) a = -3 ,b=5,c = -2 .....................................5) a = -7 ,b = -1 ,c = -4 .....................................2. a - (b + c) 1) a = 1 , b=4,c=5,d = 8 .....................................2) a = 2 , b = -3 ,c=1,d = 5 .....................................3) a = 3 , b=1,c = -2 ,d = -4 .....................................4) a = -4 ,b=2,c = -7 ,d = -3 .....................................5) a = -5 ,b = -3 ,c=6,d = -1 .....................................3. 1) (-5) + x = -9 x = ....................2) (-20) + a = -25 a = ....................3) b + (-3) = -20 b = ....................4) (-400) + (-90) + p = -495 p = ....................5) (-234) + n + (-56) = -600 n = ....................21101 | 1 1 23 25. 19 1) 2 (-30) = ............................. 2) 3 (-21) = ............................. 3) 4 (-25) = ............................. 4) 5 (-18) = ............................. 5) 6 (-15) = ............................. 6) (-30) 2 = ............................. 7) (-2) 30 = ............................. 8) (-2) 30 = ............................. 9) (-3) 21 = .............................10) (-21) 3 = .............................11) (-2) (-3) = ..................................12) (-3) (-17) = ..................................13) (-3) (- 2) = ..................................14) (-5) (-16) = ..................................15) (-3) (-5) = ..................................16) (-16) (-5) = ..................................17) (-5) (-3) = ..................................18) (-10) (-10) = .................................. 21101 | 1 1 24 26. 20 1) 12 2 = .............................2) 12 (-2) = .............................3) (-12) (-4) = .............................4) (-12) 3 = .............................5) 12 (-6) = .............................6) (-12) (-2) = .............................7) 12 (-1) = .............................8) (-12) (-3) = .............................9) (-12) 4 = ............................. 10) (-12) (-12) = ............................. 11) 364 (-7) = ............................. 12) -374 (-11) = ............................. 13) [(-285) 5] + [(-247) 19] = ................... 14) [665 (-5)] + [ 2 (-12) 3] = ................... 15) [117 (-9)] + [(-195) 13] = .................... 16) [(-204) 12] - [182 (-14)] = .................... 21101 | 1 1 25 27. 21 1. 1) [(-5) + (-3)] [(-2) - (-7)] = ........................................................................................................ 2) [(-5) (-3)] - [(-2) (-7)] = ........................................................................................................ 3) [(-5) - (-3)] + [(-6) (-2)] = ........................................................................................................ 4) {[(-10) + 4] (-3)} (-2) = ........................................................................................................ 5) (-10) + {[4 [(-3)] (-2)} = ........................................................................................................ 2. x x = ab - [(c d) + e] ( ab a b ) 1) a = 3 , b = -2 , c = 4 , d = -2, e = -1 ................................................................. 2) a = -3 , b = -2 , c = -4 , d = -1, e = 5 ................................................................. 3) a = -1 , b = 2 , c = -6 , d = 3, e = -5 ................................................................. 3. 1) [5 + (-4)] [3 - (-4)] = ........................................................................................................ 2) [(-10) (-2)] - [7 - (-3)] = ........................................................................................................ 3) [5 (-6)] [(-8) + 9] = ........................................................................................................ 4) 12 {(-3) + (-2) - (-1)]} = ........................................................................................................ 5) {[(-12) [(-3)-1]} + [(-2) = ........................................................................................................ 4. n 1) n = ab - c a = - 2 , b = -6 c = -3 ................................................................. 2) n = (a - b) (c + d) a = -8 , b = 6 , c = -1 d = -6 .................................................. 3) n = (a - bc) - (d + ef) a = 1 , b = -2 , c = d, d = 3, e = -1 f = -3 ......................................................................... 21101 | 1 1 26 28. 22 0 1 1)( 6 ) + 5 4 = .................................................................................... ( 2) + 22)( 8) + 0 + 8= ....................................................................................5 ( 6 1)3) [6 + (1)] + [2 (4)]= ....................................................................................6 + [6 (1)]4) [( 3) + 2 ] [( 1) (1) ] = ....................................................................................[2 ( 2) ] + (3 2)5) [( 2) + 2 ] [ ( 2) ] = .................................................................................... 10 ( 11 )21101 | 1 1 27 29. 23 1) 5 (3 + (-4)) = (5 3) + ( P (-4)) P = ...................................................2) (9 2) + ( 9 (-T)) = 9 (2 + (-5)) T = ...................................................3) R ((-1) + 4) = ( 6 (-1)) + ( 6 4) R = ...................................................4) 6 A = ( 5 3) 6 A = ...................................................5) 21 + (-8) = ( -8) + ( 7 E) E = ...................................................6) 15 (F 12) = ( 15 6) 12 F = ...................................................7) ( 6 4) + ( M 5) = ( 7 5) + ( 6 4) M = ...................................................8) 6 (2 + (-9)) = ( 6 2) + ( 6 A) A =...................................................9) ( 9 + 1) ( 5 + (-2)) = ( 5 + (-2)) ( N + 1) N = ................................................... 10) (9 + 11) 8 = ( 9 8) + ( W 8) W = ................................................... 21101 | 1 1 28 30. 24 1. 1) 2 2 2 2 2 = ........................................................................ ( ) 3............................................................ 2) (7) (7) (7) (7) = .................................................................. 3) ( xy) ( xy) ( xy ) =2 2 2 2 2 2 4) =..................................................................5 5 5 5 5 5 5) 100,000 =.................................................................. 6) 0.0081 =.................................................................. 7) 243 = .................................................................. 8) 625 =..................................................................2. an 23(6) 252 3 (1.32) 4 ( x + y )7 (a )3 5(a + b + c)1321101 | 1 1 29 31. 3. 1)05 = ..............................................2)1159 = .............................................3)(1)15 = ............................................4) 73 =............................................5)83 = ............................................6)(4)3 = ............................................7)106 =............................................8)(1.2)3 = ............................................ 419) =............................................ 310)( 4a ) 2 = ............................................4. 1) 1,000 = .........................................2) 625 = .........................................3) 81 = .........................................4) -125 = .........................................5) -100,000 = .........................................6) - 0.027 = .........................................7) 0.64 = .........................................8) - 32= .........................................9) - 243 = .........................................8110)= .........................................16 21101 | 1 1 30 32. 25 1. 1) 78 7 6= 78 + 6= .........................................2) ( 11 )5 ( 11 )4 = .........................................3) 311 38 312= .........................................4) 13 1320= .........................................5) ( 2 )15 ( 2 )10 ( 2 )3 = .........................................6) a5 a3 = .........................................7) a9 a9 a9= .........................................8) a10 a 8 a 7 = .........................................9) ( a )5 ( a )9 ( a )7 = ......................................... 10) 1015 10 3 = .........................................2. 1) 16 26 = ......................4)a10b5 a 3b 4 = ......................= ......................= ......................= ......................= ......................2) 35 81 = ......................5)8a 5 2 a 3 = ......................= ......................= ......................= ......................= ......................3) ( 32 ) 2 4= ...................... 6)5a 3b5 6ab 7 = ...................... = ...................... = ...................... = ......................= ......................21101 | 1 1 31 33. 26 428 1) = .................................................................................41712 25 2) = .................................................................................12 38 3) ( 0.6 )21 ( 0.6 )18 = ................................................................................. 4) 17 43 17 45= .................................................................................755 5 5) = .................................................................................6 6a 28 6),a 0 = .................................................................................a 51 7) x 25 x 25 , x 0= .................................................................................xm 8),x 0 m > n= .................................................................................xn 21101 | 1 1 32 34. 27 1. A 10n ,1 A < 10 n 1) 620,000 = ............................ 5) 45,000,000= ............................2) 3,950,000= ............................6) 5,900,000= ............................ 3) 70,200,000 =............................7) 2,750,000,000= ....................... 4) 418,000,000 = ............................8) 782,000,000,000 = .......................2. A 10n , 1 A < 10 n 1)0.043 108 = ............................ 2)0.5 109 = ............................ 3)0.00587 1011= ............................ 4)0.0039 106= ............................ 5)0.0000206 1012= ............................ 6)0.00007 106 = ............................ 7)0.00000019 1015 = ............................ 8)0.0000000068 1019 = ............................3. A 10n , 1 A < 10 n 1) 15800 109 = ............................ 2)0.0045 107= ............................ 3)479.35 108= ............................ 4)3501012= ............................ 5)0.00017 105 = ............................ 6)457 ,000 ,000 109 = ............................ 7)58.4 107= ............................ 8)0.00004865 1014 = ............................ 21101 | 1 1 33 35. 4. A 10n , 1 A < 10 n 1) (15 106 ) + (8 106 ) (3 106 ) = ............................................. 2) (47 109 ) + (5 109 ) (8 109 ) = ............................................. 3) (13 1011 ) + (9 1012 ) (3 1011 ) = ............................................. 4) (1 1012 ) + (4 1011 ) (5 1010 ) = ............................................. 21101 | 1 1 34 36. 28 1. 1)e 2) TCd ......................................................... ............................................................................................................................................................................ 3) M4) KLN ......................................................... ............................................................................................................................................................................ 5)6)p y vu ......................................................... ............................................................................................................................................................................2. 1) ............................................................ ........................................................... 21101 | 1 1 35 37. 2) ............................................................ ...........................................................3) ............................................................ ...........................................................4) ............................................................ ...........................................................5) ............................................................ ........................................................... 21101 | 1 1 36 38. 29 (1) 1 1 1. AB 2. CD AB 3. CD E 4. CE IJ 5. MN CE 4 OP m(MN) + m(CE) 2 2 1. AB 2. CD AB 3. CD E 4. CE IJ 5. MN CE 4 OP m(MN) + m(CE)21101 | 1 1 37 39. 3 3 1. AB 2. CD AB 3. CD E 4. CE IJ 5. MN CE 4 OP m(MN) + m(CE) 4 4 1. AB 2. CD AB 3. CD E 4. CE IJ 5. MN CE 4 OP m(MN) + m(CE)21101 | 1 1 38 40. 30 (2) 1 1 1. RS OP 5 1.2 1 2. RS 2 3. RS 4 2 2 1. RS OP 5 1.2 2 2. RS 2 3. RS 6 3 3 1. RS OP 5 1.2 3 2. RS 2 3. RS 8 4 4 1. RS OP 5 1.2 4 2. RS 2 3. RS 10 21101 | 1 1 39 41. 31 (1) 1 1 1. ABC ^ ABC 2. DEF ABC^^ 3. DEF EG ^ 4. DEF MNO ^ ^MNO ^ 5. XYZ DEG 3 PQR ^^m(XYZ) + m(DEG)^ ^XYZ21101 | 1 1 40 42. 2 2

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