Add, Subtract, & Multiply Decimal Review

Multiply and Dividing by 10s

100

4.3 x 10¹

43

200

13.25 x 10²

1325

300

13.25 ÷ 10²

0.1325

400

78 x 10⁵

7800000

500

78 ÷  10⁴

0.0078

Subtracting decimals with no regrouping

100

Subtract the decimals 13.62 - 11

What is 2.62

200

Subtract the decimals 37.16 - 6.06

What is 31.10

300

Subtract the decimals 93.62 - 42.61

What is 51.01

400

Subtract the decimals 117.37 - 102.24

What is 15.13

500

Subtract the decimals 15.89 - 4.87

11.02

Adding decimals using regrouping

100

Add the decimals 14.66 + 9

What is 23.66

200

Add the decimals 29.49 + 14.62

What is 44.11

300

Add the decimals 92.99 + 7.31

What is 100.3

400

Add the decimals 147.82 + 196.43

What is 344.25

500

Add the decimals 792.67 + 208.33

What is 1,001

Subtracting decimals using regrouping

100

Subtract the decimals 18.32 - 14.54

What is 3.78

200

Subtract the decimals 44.52 - 34.73

What is 9.79

300

Subtract the decimals 87.66- 19.74

What is 67.92

400

Subtract the decimals 192.17 - 117. 58

What is 74.59

500

Subtract the decimals 946.89 - 767.94

What is 178.95

Multiplying decimals

100

4 x 0.2

0.8

200

5 x 0.12

0.6

300

8.1 x 2

16.2

400

2.27 x 0.5

1.135

500

3.21 x 0.8

2.568