Place Value
Adding Decimals
Subtracting Decimals
Multiplying Decimals
100

Write the number twenty-one and twelve thousandths as a decimal 

21.012

100

0.96 + 0.70

1.66

100

8.5 - 2.1 = 

6.4

100

0.3 × 0.4

0.12

200

Write the number in standard form: 

3 × 0.1 + 9 × 0.01 + 1 × 0.001

0.391 

200

  13.76 + 2.8


16.56

200

 13.5  -  6.48  =

7.02

200

0.07 × 0.8

0.056

300
Compare 19.657 _____ 19.67

< , or less than 

300

50.5 + 51.2

101.7

300

264.7 - 241.38 =

23.32

300

8 × 5.85

46.80

400

Write 3.146 in expanded form 

3 + .1 + .04 + .006 

3 + 1 x 1/10 + 4 x 1/100 + 6 x 1/1000  

3 + 1/10 + 4/100 + 6/1000

400

10.976 + 6.104

17.080

400

0.825 - 0.062 =

0.763

400

15.0 x 5.8 = 

87.00 or 87

500

Write 19.345 in expanded form

19 + .3 + .04 + .005 

10 + 9 + 3 x 1/10 + 4 x 1/100 + 5 x 1/1000  

19 + 3/10 + 4/100 + 5/1000

500

65.526 + 86.233

151.759

500

0.350 - 0.028

0.322

500

7.98 × 4.0

31.920

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