Rational Numbers

Conversions

100

What is 1/4 as a decimal?

0.25

200

What is 1/8 as a decimal?

0.125

300

What is 1/3 as a decimal?

0.3 repeating

400

What is 5.08 as a fraction?

5 8/100

500

What is 0.4 as a fraction?

2/5

Addition

100

1+(-3)

-2

200

-4+9

5

300

(-3.02)+(-4.6)

-7.62

400

(1/4) + (5/8)

7/8

500

Two teams are playing globeball. Team 1 scores: 1, 3 and -5 points. Team 2 scores: 2, -3, and 2 points. Who won?

Team 2

Subtraction

100

2-8

-6

200

10- (-2)

12

300

(1/3)-(1/6)

1/6

400

-7.52 - (-8.64)

1.12

500

A bird is flying above the ocean at 65 feet above sea level. A fish is swimming 10 feet below sea level. What is the difference?

75 feet

Multiplication

100

-6 x 4

-24

200

-7 x -9

63

300

(1/8) x (3/4)

3/32

400

(-6.24) x (-4.5)

28.08

500

Ms. Jacobsen descends two fifths of the way down a 650 ft mountain. How far down did she go?

260 feet

Division

100

99 divided by -11

-9

200

-18 divided by -6

3

300

(3/4) divided by (-1/2)

-1 1/2

400

-48.12 divided by .06

802

500

Zach buys a car for 30,000. He wants to pay it off in 4 payments. How much is each payment?

7,500