Adding and Subtracting Decimals

Adding 1

100

6.5 + 1.2

7.7

200

5.34 + 182.12

187.46

300

1721.292 + 1.103

1722.395

400

.1928 + 19.1982

19.391

500

109.014 + 193.183

301.197

Subtracting 1

100

1  - .42

0.58

200

10 - .193

9.807

300

192.1 - 17.192

 174.908

400

800.121 - 493.155

306.966

500

500 - .1028

 499.8972

Adding 2

100

40.2  + 10.21

50.41

200

100.192 + 76.5

178.692

300

60.754 + 192.84

253.594

400

283-192.182

90.818

500

17,373.192 - 1,029.182

16,344.01

Subtracting 3

100

.102 - 0

.102

200

10-.192

9.808

300

1028.192 - 5.301

1,022.891

400

.192 - .005

0.187

500

22,838.1823 - 100.293

22,737.8893

Rounding

100

Round 106 to the nearest hundred 

100 

200

Round .12 to the nearest tenth 

.1

300

Round 109.913 to the nearest hundredth

109.91

400

Round 6,194.199 to the nearest hundredth

6,194.20

500

Round 192.188 to the nearest tenth 

192.2