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Round to the Nearest Ten
Round to the Nearest Hundred
Round to the Nearest Thousand
Adding Decimals
Subtracting Decimals
100

13.4

10

100

172.3

170

100

1004.2

1000

100

15.2+15.2=

30.4

100

10.8-5.6=

5.2

200

36.4

35

200

304.6

305

200

3672.6

3670

200

38.6+38.6=

116.8

200

33.3-30.1=

3.2

300

53.9

55

300

557.7

560

300

5352.1

5350

300

570.4+570.4=

1140.8

300

507.4-193.2=

314.2

400

75.6

80

400

744.4

740

400

7234.2

7230

400

789.2+789.2=

1578.4

400

715.8-525.6

190.2

500

94.2

90

500

986.7

990

500

9495.6

9500

500

9984.8+9984.8

19969.6

500

9824.5-3428.9=

6395.6