Subtraction without Regrouping
Addition without Regrouping
Subtraction with Regrouping
Addition with Regrouping
Rounding
100

6 - 3

3

100

7 + 5

12

100

61 - 29

32

100

55 + 55

110

100

27 Round to the nearest ten

30

200

79 - 45

34

200

35 + 16

51

200

85 - 46

39

200

31 + 29

60

200

43 Round to the nearest ten

40

300

859 - 125

734

300

155 + 355

510

300

742 - 648

94

300

234 + 186

420

300

896 Round to the nearest hundred

900

400

355 - 252

103

400

435 + 186

621

400

516 - 348

168

400

629 + 381

1,010

400

428 Round to the nearest hundred

400

500

3,478 - 2,234

1,244

500

1,235 + 1,356

2,591

500

5,642 - 3,752

1,890

500

7,802 + 4,397

12,199

500

5,467 Round to the nearest thousand

5,000

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