Adding Decimals
Power of 10
Multiplying Decimals
Decimal Points
Whole # x Decimals
100

6.7 + 2.2

8.9

100

3.1 x 10

31

100

1.2 × 2.1

2.52

100

12 x 4.8 = 576

57.6

100

12 × 0.5

6 or 6.0

200

12.45 + 6.2

18.65

200

54.1 x 100

541

200

2.5 × 1.4

3.5

200

5.2 x 6.4 = 3328

33.28

200

24 × 1.2

28.8

300

34.78 + 12.56

47.34

300

0.062 x 100

62

300

3.2 × 2.5

8.00 or 8.0 or 8

300

6.99 x 21 = 14679

146.79

300

35 × 2.4

84 or 84.0

400

125.67 + 48.90

174.57

400

1.24 x 1,000

1,240

400

4.5 × 2.3

10.35

400

18 x 3.38 = 6084

60.84

400

42 × 1.25

52.5

500

246.785 + 39.67

286.455

500

0.009 x 10

0.09

500

12.4 × 3.2

39.68

500

9.01 x 91 = 81991

819.91

500

56 × 2.12

118.72