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Rational Numbers
Adding Rational Numbers
Subtracting Rational Numbers
Multiplying Rational Numbers
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100

Write 7/10 as decimal

0.7

100

-10 + 100 =

90

100

10 - 100 =

-90

100

-8 x 9 =

-72

100

-64/128

-2

200

Write 9/100 as a decimal.

0.09 or .09

200

-23 + 24 =

1

200

-9 - 9 =

-18

200

-7 x -9 =

63

200

-10/100

-10

300

Write 17/100 as a decimal.

0.17

300

1.25 + (-9) =

-7.75

300

1.23 - (-1.23)

2.46

300

0.03 x 0.05 =

0.0015

300
9/7.2

0.8

400
Write -20/100 as a decimal.

-0.20

400

2 2/4 + -1/2

2

400

1/2 - 1/6

1/3

400

-0.9 x 0.8 =

-0.72

400

-6/2.4

-0.4

500

Write 0.25 as a fraction.

25/100

500

3/4 + 1/8

7/8

500

-1/2 - 1/2

-1

500

1/2 x 2/7

1/7 or 2/14

500

-78.8/157.6

-2