MATH REVIEW

Addition

1

Find 4,153 + 2,988.

7,141

2

Find 92,425 + 31,675.

124,100

3

Find 22,283 + 14,169.

36,452

4

Find 47,676 + 16,521.

64,197

5

Find 1,089 - 961.

128

Subtraction

1

Find 40,700 - 23,984.

16,716

2

Find 8,052 - 1,205.

6,847

3

Find 20,008 - 16,074.

3,934

4

Find 70,000 - 25,228.

44,772

5

Find 560,043 - 312,562.

247,481

Estimation

1

Estimate the difference by rounding each number to the nearest ten.

17,586 - 9,483

17,590 - 9,480 = 8,110

2

Estimate the sum by rounding each number to the nearest ten.

651,198 + 49,753

651,200 + 49,750= 700,950

3

Estimate the sum by rounding each number to the nearest hundred.

995,275 + 4,921

995,300 + 4,900 = 1,000,200

4

Estimate the difference by rounding each number to the nearest thousand.

8,352 - 3,421

8,000 - 3,000 = 5,000

5

Estimate the sum by rounding each number to the nearest thousand.

823,725 + 44,851

824,000 + 45,000 = 869,000

Mystery

1

Find the sum.

572,941 + 181,662

754,603

2

Find the difference. 

651,784 - 482,638

169,146

3

Find the sum. 

142,968 + 44,456

187,424

4

Find the difference.

4,978 - 2,766

2,212

5

Find the difference.

735,184 - 255,863

479,321