Adding and Subtracting Decimals

Basic Add

100

45.4+7.6

What is 53

200

35.7+52.4

What is 88.1

300

14.68+70.05

What is 84.73

400

140.7+256.8

What is 397.5

500

893.57+613.88

What is 1507.45

Basic Subtract

100

6.3-2.7

What is 3.6

200

7.75-3.60

What is 4.15

300

68.99-62.56

What is 6.43

400

4-3.4

What is 0.6

500

80-0.088

What is 79.912

Not So Basic Add

100

76+5.89

What is 81.89

200

132.06+37.491

What is 169.551

300

5.888+197.3

What is 203.188

400

1,013+12.5734

What is 1025.5734

500

0.85763+99.5691

What is 100.42673

Not So Basic Subtract

100

6.26-2.5

What is 3.76

200

4.802-1.3

What is 3.502

300

6.6-1.991

What is 4.609

400

4.305-0.6666

What is 3.6384

500

793-142.563

What is 650.437

Rounding

100

Round 251.89 to the nearest tenth

What is 251.9

200

Round 319.092 to the nearest hundredth? 

What is 319.09?

300

Round to the nearest thousandths 1.51245

What is 1.512?

400

Round to the nearest ones 584.5

What is 585

500

Round to the nearest ten thousandths 521.09899

What is 521.0990