Decimals

Adding Decimals

100

0.52 + 0.49

1.01

200

0.98 + 0.78

1.76

300

1.12 + 0.35

1.47

400

1.23 + 5.48

6.71

500

4.3647 + 10.3564

14.7211

Subtract Decimals

100

0.49 - 0.30

0.19

200

0.49 - 0.28

0.21

300

1.56 - 0.23

1.33

400

8.68 - 2.65

6.03

500

135.1343 - 67.784

67.3503

Dividing Decimals by powers of 10

100

12.9 ÷ 10²

0.129

200

14.374 ÷ 10²

0.14374

300

12,394 ÷ 10³

12.349

400

15.329 ÷ 10²

1532.9

500

12,412 ÷ 10⁵

124.12

Multiply by powers of 10

100

0.424 × 10³

424

200

1.074 × 10⁴

10,740

300

1.257 × 10²

125.7

400

0.5843 × 10³

584.3

500

4.7857786673 × 10⁸

478577866.73

Story Problems

100

Sammy had a jar that was 0.5 of a pound filled with candy. He had another jar 0.60 of a pound filled with candy. How many pounds of candy does he have in all?

0.1\0.10