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Grade 6 Mental Math #1
1. 9 x 8 =2. 20 x 40 =
3. 5400 100 =4. 700 195 =5. 25 x 12 =6. 2 x 332 =7. 25 + 15 + 85
+ 75 =8. 4 x 99 =
9. 150 25 =10. Half of 230 is:
11. Estimate 51.2 x 1112. 11 x 16 =
Grade 6 Mental Math #2
1. 11 x 12 =2. 40 x 30 =
3. 630 10 =4. 500 298 =5. 25 x 14 =6. 3 x 223 =7. 55 + 85 + 15 +
45 =8. 3 x 98 =
9. 125 25 =10. Half of 320 =11. Double 1425 =12. Estimate 25.3 x
11=
Grade 6 Mental Math #3
1. 6 x 9 =2. 50 x 30 =
3. 4200 10 =4. 900 198 =5. 25 x 18 =6. 4 x 211 =7. 75 + 35 + 65
+ 25 =8. 5 x 99 =
9. 225 25 =10. Half of 430 is:
11. Triple 1123 is :12. Estimate 9 x 29.6
Grade 6 Mental Math #4
1. 11 x 11 =2. 60 x 20 =
3. 9300 100 =4. 400 99 =5. 17 x 25 =6. 3 x 223 =7. 15 + 35 + 85
+ 65 =8. 2 x 99 =
9. 125 25 =10. Half of 224 =11. Double 1424 =12. Estimate 9 x
49.4 =
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Grade 6 Mental Math # 5
1. 8 x 7 =2. 30 x 60 =
3. 6400 100 =4. 800 195 =5. 50 x 12 =6. 3 x 33 =7. 35 + 20 + 70
+ 65 =8. 3 x 98 =
9. 200 25 =10. Half of 130 is:
11. Double 1425 is:12. Estimate 41.2 x 11 =
Grade 6 Mental Math #6
1. 9 x 6 =2. 64 x 100 =3. 3 x 323 =
4. 72 8 =5. 15 + 55 + 85 + 45 =6. 7 x 99 =
7.
483
10 =8. 237 x 0.01 =9. $2.99 + $2.99 =10. 5 x 57 x 2 =11. 800 397
=
Grade 6 Mental Math # 7
1. 9 x7 =2. 11 x 11 =
3. 53 x 100 =4. 50 x 44 =
5. 56 7 =
6. 300 15 =
7. 63 10 =
8. 365 0.01 =9. 400 85 =10. 30 + 12 + 20 =
11. Half of 250 is:12. Estimate 19.9 x 34
Grade 6 Mental Math # 8
1. 8 x 6 =2. 72 x 100 =3. 14 x 11 =4. 4 x 22 =5. 5 x 35 x 2 =6.
5 x 99 =
7. 25 x 44 =8. 276 x 0.1 =9. Half of 640 is:
10. 600 298 =
11. 57 10 =12. Estimate 14.9 x 3.8
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Grade 6 Mental Math # 9
1. 7 x 8 =
2. 9 x 7 =3. 44 x 20 =4. 587 x 20 =
5. 54 9 =
6. 99 10 =7. 623 x 0.01 =8. $2.99 + $3.99 =9. Half of 846
is:
10. Estimate 7.8 x 911. Double 45 is:12. __ x 110 = 550
Grade 6 Mental Math # 10
1. 9 x 9 =2. 11 x 11 =3. 67 x 100 =4. 50 x 44 =
5. 56 7 =
6. 300 15 =
7.
630
10 =8. 489 x 0.01 =9. 400 85 =
10. Half of 650 is:11. Estimate 19.8 x 2212. 40 + 12 + 20 =
Grade 6 Mental Math # 11
1. 6 x 7 =
2. 47 x 100 =3. 34 x 20 =4. Estimate 9.8 x 55. 8 x 8 =6. 54 10
=7. Double 35 is:8. Estimate 14.9 + 1.7
7.99 =
9. 56 x 0.01 =10. 28 4 =11. Double 33 is:12. 4 x __ = 440
Grade 6 Mental Math # 12
1. 11 x 17 =2. 9 x 7 =3. 44 x 20 =4. 587 x 10 =
5. 54 9 =
6. 9.9 10 =7. 623 x 0.01 =8. $2.99 + $6.99 =9. Half of 846
is:
10. Estimate 7.8 x 9 =11. Double 45 =12. __ x 110 = 880
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Grade 6 Mental Math #13
1. 7 x 8 =2. 9 x 4 =
3. 33 x 20 =4. 587 x 100 =
5. 63 9 =
6. 7.9 10 =7. 386 x 0.01 =8. 8.99 + 5.99 =9. Half of 684 is10.
Estimate 5.7 x 9 =
11. Double 35 is12. __ x 110 = 550
Grade 6 Mental Math # 14
1. 9 x 7 =2. 11 x 11 =3. 67 x 100 =4. 50 x 44 =
5. 56 7 =
6. 300 15 =
7.
63
10 =8. 489 x 0.01 =9. 400 85 =10. Half of 650 is11. Estimate
19.8 x 2212. 40 + 12 + 20 =
Grade 6 Mental Math # 15
1. 7 x 7 =2. 99 x 100 =
3. 44 x 20 =4. Estimate 9.6 x 7 =5. 6 x 8 =
6. 92 10 =7. Estimate:
14.7 + 1.7 7.99 =8. 47 x 0.01 =
9. 21 7 =
10. 5 x 70 x 2 =11. Double 45 =12. __ x 110 = 770
Grade 6 Mental Math # 16
1. 7 x 7 =2. 20 x 50 =
3. 3500 100 =4. 800 175 =5. 25 x 6 =6. 2 x 412 =7. 35 + 15 + 75
+ 65 =8. 4 x 98 =
9. 150 25 =10. Half of 320 is11. Estimate 49.5 x 1012. Double 40
& add
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Grade 6 Mental Math # 17
1. 10 x 12 =
2. 70 x 80 =3. 550 10 =4. 700 298 =5. 25 x 16 =6. 3 x 212 =7. 15
+ 55 + 45 + 85 =8. 3 x 198 =
9. 250 25 =
10. Double 20 & add 7011. Double 1250 is12. Estimate 298 x 4
=
Grade 6 Mental Math # 18
1. 9 x 6 =2. 30 x 30 =
3. 2400 100 =4. 900 298 =5. 25 x 15 =6. 3 x 331=7. 75 + 15 + 65
+ 25 =8. 4 x 99 =
9. 325 25 =10. Triple 1213 is11. Half of 830 is12. Estimate 8 x
39.6
Grade 6 Mental Math # 19
1. 11 x 13 =
2. 40 x 80 =3. 9200 100 =4. 700 99 =5. 12 x 25 =6. 2 x 323 =7.
15 + 45 + 55 + 85 =8. 4 x 199 =
9. 225 25 =
10. Half of 442 =11. Double 224212. Estimate 9 x 39.4 =
Grade 6 Mental Math # 20
1. 12 x 12 =2. 50 x 30 =
3. 7200 10 =4. 700 199 =5. 14 x 25 =6. 3 x 132 =7. 85 + 40 +60
+15 =8. 199 x 3 =
9. 275 25 =10. Half of 446 =11. Double 824 =12. Estimate 7 x
29.7 =
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Grade 6 Mental Math # 21
1. 9 x 7 =2. 300 x 600 =
3. 64 000 100 =4. 1000 295 =5. 100 x 12 =6. 4 x 2112 =7. 75 + 30
+ 20 +25 =8. 298 x 4 =
9. 700 25 =10. Half of 240 =
11. Double 122312. Estimate 51.3 x 9 =
Grade 6 Mental Math # 22
1. 8 x 6 =2. 45 x 1000 =3. .052 x 100 =
4. 54 6 =5. 65 + 50 + 40 + 35 =6. 7 x 299 =7. 457 x 0.01
8. 250 5 =
9. $26.00 + $9.99 =10. 2 x 99 x 5 =11. 375 150 =12. Double 734
=
Grade 6 Mental Math # 23
1. 5 x 8 =2. 25 x 11 =
3. 25 x 10004. 500 20 =
5. 396 10 =6. 630 x 10 =
7. 465 0.01 =8. 450 75 =9. 25 + 17 + 25 =
10. 25 x 40 =
11. Half of 684 =12. Estimate 34.7 + 64.6
Grade 6 Mental Math # 24
1. 9 x 9 =2. 55 x 1000 =3. 36 x 11 =4. 5 x 47 x 2 =5. 4 x 299
=6. 50 x 22 =7. 0.52 x 100 =8. 3 x 232 =9. Double 640 =
10. 700 198 =
11. 57 100 =12. Estimate 19.7 x 50 =
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