Math Enrichment for the Christmas Break The math problems below come from the standards we have

already discussed during the 1 semester of school.

Add or Subtract with Decimals

234.9863.07

129.76765.2

546.09214.65

+ ++

Multiply or Divide

4634

x 2357

x 9826

x 4985

x 2871

x

Multiply with Multiples

506.23217.81

- 330.9214.65

-

40 x 200 = ______300 x 12 = ______50 x 11 =_______320 x 10=_______

23 146923 76 4797 41 5231

Divisibility: Put a check in the box if the number is divisible by that number.

Number 2 3 4 5 6 9 10

45

163

372

566

45,930

123,456

Find the Greatest Common Factor of the following numbers.

12:

24:

3:

6:

27:

42:

Find the Least Common Multiple of the following numbers.

12:

60:

3:

36:

7:

42:

Rule x 9 Rule - 2

Input Output Input Output

11   12  

4   3  

7   28  

1   6  

6   12  

Rule X 4 Rule - 5

Input Output Input Output

8   7  

3   34  

4   14  

12   8  

9   22  

Rule + 3 Rule + 4

Input Output Input Output

13   1  

3   2  

1   76  

18   4  

6   45  

       

Input and Output Tables: Find the output

Find the sum, difference, product or quotient by solving for X = 4.

1. 8 ÷ X = _______________ 2. 14 – X = _______________3. 17 + X = _____________ 4. 4 x X = ________________5. 75 + X = _____________ 6. 12 x X = _______________7. 28 ÷ X = ____________ 8. 16 ÷ X = ____________

Rounding Numbers to the 10’s, 100’s and 1,000’s Place Practice

Round the following numbers to the 10’s Place.

1.) 84 __________

2.) 19 __________

3.) 735 ___________

4.) 46 _________

5.) 1,708 __________

Round the following numbers to the 100’s Place.

6.) 999 __________

7.) 325,555 __________

8.) 2,277 ___________

9.) 11,305 ___________

10.) 491 __________

Round the following numbers to the 1000’a Place

11.) 456,789 __________

12.) 23,941 __________

13.) 8,089 __________

14.) 32,502 __________

15.) 7,180 __________

73, 62, 51, 40 ______ ______ ______ Rule: ________10, 20, 30, 40 ______ ______ ______ Rule: ________7, 14, 21, 28 ______ ______ ______ Rule: ________3, 9, 27, 81 ______ ______ ______ Rule: ________5, 25, 125, 625 ______ ______ ______ Rule:________1, 9, 81, 729 ______ ______ ______ Rule: ________1, 4, 16, 64 ______ ______ ______ Rule: ________0.5, 1.0, 1.5, 2.0 ______, ______, _____ Rule: ________198, 184, 170, 156 ______ ______ ______ Rule: ________

Patterns: Find the next 3 numbers and write the rule.

1

32

45

0

6

1 2 3 4 50 6

1

32

45

0

6

1 2 3 4 50 6

Put a star at the following coordinates on the graph.(2,3)(0,3)(4,6)(6,2)(6,4)(1,4)

Write the coordinate of each symbol below.

______

______

______

______

______

What is the path from the sun to the face?

Coordinate Plane: Graphing

Directions: Write the place of the underlined digit.

510,789.09__________ 237,230,980 __________

951,359 __________ 1,781,509 __________

388,740.76__________ 968,257.6 __________

539,268,890__________ 588,526.060__________

106,006.98__________ 107,780 __________

Directions: Compare the numbers below. Put <, >, or =.

510,789.8_______ 237,230.80 981,509 ________ 781,509968,257.09________968,257.90 539,268 ________ 588,526106,006 ________ 107,006 89,236 ________ 9,236102,867.88________102,876.88 30,785.08 ________ 30,785.080

Directions: Write the number in word form.

1,765,049.98

12,870.07

970,812.23