Foundations of Algebra Chapter 3 Review

Integer Add/Subtract

100

13 + 57 

= 70

200

-9 - (-19)

= 10

300

-12 + (-8) 

= -20

400

−19+(−42)+12

= -49

500

10+4(−3+7)

= 26

Integer Mult/Div

100

5(8) 

= 40

200

72 / (-8)

= -9

300

−3⁴

= -81

400

(8−15)(9−3)

= -42

500

(−3)(4)(−5)(−6)

= -360

Absolute Value

100

|21|

=21

200

|-3| 

3

300

-|2| + 4

= 2

400

- |-53| + 3

= -50

500

|14−8|−|−2|

 = 4

Using Variables

100

8p=72

P = 9

200

−5s= −100

S = 20

300

7x−3 when x=−9

= -66

400

5a+8b when a=−2,b=−6

= -58

500

x²+5x+4 whenx=−3

= -2

Miscellaneous

100

Plot the following points on a number line: 

1, -4, -7, 5

(Show White Board)

200

(−11)(−11)

= 121

300

Translate and solve

The product of −21 and n is 63.

-21 (n) = 63

n = -3

400

Temperature One morning the temperature in Bangor, Maine was 18 degrees. By afternoon, it had dropped 20 degrees. What was the afternoon temperature?

= -2 degrees

500

ANSWER BOTH: 

Temperature On Monday, the high temperature in Denver was −4 degrees. Tuesday’s high temperature was 20 degrees more. What was the high temperature on Tuesday?

Credit Frida owed $75 on her credit card. Then she charged $21 more. What was her new balance?  

Answer 1: 16 degrees 

Answer 2: Balance = 96 dollars owed