Rational Numbers Operations

Represent Integers

100

Find the absolute value of |-76|

76

200

Write an integer to represent:  In the winter the temperature can reach a wind chill of 47 degrees below zero

-47

300

Order from Least to Greatest:

14, -13, -19, |-13|

-19, -13, |-13|, 14

400

A scuba diver dove 38 feet below the surface then came up 16 feet to help his partner.  Together they dove an additional 21 feet.  How far below the surface are the divers?  

-23 feet 

500

Is the following always, sometimes or never true?

|n| < 0 

never

Add Rational Numbers

100

-8 + 7 + (-13)

-14

200

40 +(-16) + (-17)

7

300

4/5 + (-4  2/5)

-3  3/5

400

- 1 / 6 + (- 3 / 10)

- 7 / 15

500

3.7 + (-2.59)

1.11

Subtract Rational Numbers

100

-26 - 26

-52

200

-35 - (-17)

-18

300

20/15a - (-8/15a)

28/15a

400

- 1  1 / 8. - 2  3 / 4

- 3  7 / 8

500

-3.7 - 2.59

-6.29

Multiply Rational Numbers

100

7(5)(0)(4)

0

200

-77 x 7

-539

300

(-2a/5 )(3/8a)

-3/20

400

(- 9/10)(-4  1/3)

3  9/10

500

0.75(1/2)

3/8 or 0.375

Divide Rational Numbers

100

-169 / (-13)

13

200

-64 / 8 

-8

300

-5/6 / 2/3

- 1 1 /5

400

3 1/5 / (-5)

- 18 / 25

500

3.4 / (-1.7)

-2