Math w/ decimals

Adding decimals

100

1.01 + 2.01

3.02

200

5.29 + 5.70

10.99

300

12.67 + 1.16

13.83

400

87.87 + 21.12

108.99

500

117.34 + 300.96

418.30

Subtracting decimals

100

16.25 - 2.03

14.22

200

79.42 - 34.21

45.21

300

58.03 - 36.2

22.01

400

99.98 - 54.68

45.30

500

153.73 - 9.22

144.51

Estimating and multiplying

100

Estimate the whole numbers and then say the estimated answer:

24 x 16

400

200

Estimate the whole numbers and then say the estimated answer:

76 x 89

720

300

Estimate the whole numbers and then say the estimated answer:

768 x 64

48,000

400

Estimate the whole numbers and then say the estimated answer:

675 x 936

630,000

500

Estimate the whole numbers and then say the estimated answer:

1,743 x 6,740

14,000

Two decimals that make a whole

100

1.9 + 0.1

2

200

4.65 + 3.35

8

300

89.5 + 0.5

90

400

24.434 + 4.566

29

500

679.455 + 20.545

700

Powers of ten

100

10³

1,000

200

20⁴

20,000

300

30²

300

400

40⁶

4,000,000

500

50⁷

50,000,000