Decimals Decimals Decimals

add decimals

100

33.3 + 12.4

45.7

200

43.56 + 2.45 =

46.01

300

27.06 + 3.4

30.46

400

13.40 + 9.8

23.20

500

Mr. Becker drove 11.3 km to the dentist, 7.5 km to the library, and 5.8 km back home. How far did he travel?

24.6 km

subtract decimals

100

46.5 - 22.3

24.2

200

56.2 - 35.8

20.4

300

13.40 - 9.8

3.6

400

46.5 - 3.46

43.04

500

If a 10-metre piece of electrical tape has 0.037 metres cut from it, then what is the new length of the tape?

9.963 metres

multiply decimals

100

3 x 0.5

1.5

200

2.45 x 3

7.35

300

.3 x 0.85

0.255

400

.6 x 12.5

7.5

500

.18 x 30.6

5.508

divide decimals

100

0.6 divided by 6

0.1

200

1.8 divided by 6

0.3

300

14.54 divided by 4

3.635

400

4.05 divided by 1.5

2.7

500

24.44 divided by 2.6

9.4

powers of ten

100

8.5 divided by 10

.85

200

1.28 x 10²

128

300

9.969 divided by 100

0.09969

400

6.14 divided by 10⁴

0.000614

500

79.5 x 10,000

795,000