Review Time!!! Operations with Decimals

Multiplying/Dividing by Base 10

100

12.1 x 100

1,210

200

9.563 x 10 =

95.630

300

52.1 / 1,000 =

0.0521

400

0.321 / 10

0.0321

500

59.86422 x 1000 =

59864.22

Adding Decimals

100

Add these decimals: 21.74 + 8.27

30.01

200

Add these decimals: 5.2 + 3.11

8.31

300

Add these decimals: 6.125 + 18.4729

24.5979

400

Add these decimals: 4.67 + 29.1

33.77

Multiplying Decimals

100

Multiply these decimals: 0.12 * 7

0.84

200

Multiply 4.4 * 5.3 =

23.32

300

Multiply these decimals: 1.83 * 0.3

5.49

400

Multiply these decimals.  12.7 * 2.6 =

33.02

500

Multiply these decimals: 1.246 x 3.4

4.2364

Subtracting Decimals

100

Subtract these decimals: 851.701 - 312.49

539.211

200

Subtract these decimals: 10.71 - 0.7

10.01

300

Subtract these decimals: 547.612 - 3.107

544.505

400

Subtract these decimals: 9.034 - 0.095

8.939

500

Subtract these decimals: 1.72 - 0.802

0.918

DividingDecimals

100

Divide these decimals: 30.9 ÷ 3 

10.3

200

Divide these decimals: 60.5 ÷ 0.5

12.1

300

Divide these decimals: 1.272 ÷ 6

0.212

400

Divide these decimals: 3.25 ÷ 0.05 

65

500

Divide these decimals: 26.73 ÷  1.1

24.3