Multiplying/Dividing by Base 10
Adding
Decimals
Multiplying
Decimals
Subtracting
Decimals
Dividing
Decimals
100

12.1 x 100

1210

100

Add these decimals: 21.74 + 8.27

30.01

100

Multiply these decimals: 0.12 x 7

0.84

100

Subtract these decimals: 851.701 - 312.49

539.211

100

Divide these decimals: 30.9 ÷ 3 

10.3

200

52.1 x 1000 =

52100

200

Add these decimals: 6.125 + 18.4729

24.5979

200

Multiply these decimals: 1.83 x 0.3

0.549

200

Subtract these decimals: 547.612 - 3.107

544.505

200

Divide these decimals: 701 ÷ 2

350.5

300

9.563 x 10 =

95.63

300

Add these decimals: 5.2 + 3.11

8.31

300

Multiply 4.4 x 5.3 =

23.32

300

Subtract these decimals: 10.71 - 0.7

10.01

300

Divide these decimals: 60.5 ÷ 50

1.21

400

32.1 ÷ 100

0.321

400

Add these decimals: 17 + 9.54

26.54

400

Multiply these decimals.  12.7 x 2.6 =

33.02

400

Subtract these decimals: 9.034 - 0.095

8.939

400

Divide these decimals: 8.05 ÷ 2.1 

3.833...

500

59864.22 ÷ 1000 =

59.86422

500

Add these decimals: 4.67 + 29.1

33.77

500

Multiply these decimals: 1.246 x 3.4

4.2364

500

Subtract these decimals: 1.72 - 0.8

0.92

500

Divide these decimals: 3.468 ÷  .06

57.8

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