Rounding
Addition
Subtraction
Inverse Opertations
Spiral Review
100

Round 16 to the nearest ten.

20

100

500 + 100

600

100
700 - 200

500

100

What is the inverse operation of subtraction?

Addition

100

8 x 3

24

200

Round 156 to the nearest hundred

200

200

2,500 + 3,500

6,000

200

3,500 - 1,000

2,500

200

What is the inverse operation of multiplication?

Division

200

27 / 3

9

300

Round 3,478 to the nearest thousand

3,000

300

4,025 + 3,075

7,100

300

5,688 - 2,345

3,343

300

6,500- 3,254 is equal to 3,246.  How can I check my answer?

Use addition!  3,254 + 3,246 is equal to 6,500.

300

Write 3,457 in expanded form

3,000 + 400 + 50 + 7

400

Round 762,854 to the nearest ten-thousand

760,000

400

9,256 + 5782

15,038

400

1165 - 872

293

400

8,425 - 6,432 is equal to 1,993.  How do I check my answer?

Use addition! 6,432 + 1,993 = 8,425

400

Write 67,234 in word form

sixty-seven thousand, two-hundred thirty-four

500

Round 346,927 to the nearest thousand.

347,000

500

472,867 + 614,536

1,087,403

500

678,345 - 392,412

285,933

500

562,900 - 9,800 is equal to 553,100.  How do I check my answer?

Use addition!  553,100 + 9,800 = 562,900.

500

Write 746,437 in word form

Seven hundred forty-six thousand, four hundred thirty-seven.

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