7th Grade: Operations with Rational Numbers

Converting or Comparing

100

The fraction which is equivalent to -.25

- 1/4

200

The decimal value equivalent to 7/10.

0.7

300

The fraction value equivalent to 2.375.

2 and 3/8

400

Which is larger 5/16 or 0.315?

0.315

500

Which is larger, -7/12 or -0.583?

-0.583

Adding Rational Numbers

100

3.15 + 2.25

5.40

200

0.38 + (-1.2)

-0.82

300

9/25 + (-17/25)

-8/25

400

-5/4 + 5/6 = 

-5/12 

500

-1.333... + 3/8 + (-2.4) =

-403/120 or -3.358333...

Subtracting Rational Numbers

100

8/11 - 3/11

5/11

200

- 4/13 - 8/13

-12/13

300

-0.06 - (-0.86)

0.8

400

-11/12 - (-1.45)=

8/15 or 0.5333...

500

-1 1/3 - 0.875 - (-2 3/5) = 

57/120

Multiplying Rational Numbers

100

5 • 1/3 =

5/3

200

-3.2 • 5.345 =

-17.104

300

-1 5/8 • 1.25 = 

-2.03125 or -65/32

400

-2.57 (-1/2)

1.285

500

-1 2/3 • 0.8 • 1.5 = 

-2

Dividing Rational Numbers

100

1/4 ÷ 3/8 =

2/3

200

-20 ÷ 0.5 =

-40

300

-2  3/11 ÷ -5/8 =

40/11

400

-1.85 ÷ 4/5 =

2.3125 or 2 5/18

500

-3/4 • 1.4 ÷ 1 2/3

-63/100 or -0.63