M4: Rational Numbers

Rational Numbers

100

Write 11/20 as a decimal

0.55

200

When written as a fraction, is the following a terminating or repeating decimals?

a.  7/40     b.  13/40    c.  7/9

a.  Terminating   b.  Terminating   c.  Repeating

300

DOUBLE JEOPARDY

What is the decimal representation of - 3/11?  Make sure to use bar notation if necessary.

0.27 with the bar over both the 2 and the 7

400

Morgan earned $52.50 Tutoring and $25.00 Raking Leaves at her summer jobs.  What is the additive inverse of the total amount that Morgan earned?  

- $77.50

500

Melissa spent -$10.95 on a calculator and -$2.30 on a binder.  Would would be the additive inverse of how much she spent?

a. earning $____    b. spending $____    

c. donating $____    d. losing $____  

a Earned $13.25

Adding Rational Numbers

100

Find. -1/3 + 5 2/3

16/3 or 5 1/3 or 5.333333

200

DOUBLE JEOPARDY

Add -6 5/12 + 2 1/12

-52/12   or -4 1/3  or -4.33333

300

1.45 + (-1/5) + (-5/8)

0.625 or 5/8

400

-0.5 + 2 1/4 + 1 5/8

3.375 or 3 3/8

500

1.55 + (-3/5) + (-7/8)

3/40 or 0.075

Subtracting Rational Numbers

100

-4.13 - (-10.1)

5.97

200

1/3 - 3 5/6

-3 1/2

300

2/3 - 2 5/6

-2 1/6 or -2.1666666

400

DOUBLE JEOPARDY

3 1/4 - (-6.15)

9 2/5  or 9.4

500

1 1/4 - (-2.15)

3 2/5 or 3.4

Multiplying/Divide Rational Numbers

100

-4/5 x -7/8

7/10 or 0.7

200

9/12 x ( -1.8)

-1.35 

300

DOUBLE JEOPARDY

-4/5   /   7/10

-1 1/7  or -40/35 or -1  5/35

400

-5/8 x (3 1/2)

-35/16  or -2.1875    or -2 3/16

500

0.45 / -3/4

-0.6