Unit 2A Test Review (Props/Exp/1&2-step Equ)

Properties

100

What property is used below?

23 + 0 = 23

Identity (+)

200

What property is used below?

a + b + c = c + a + b

commutative property (x)

300

What property is used below?

3p x 0 = 0

Multiplicative Property of Zero

400

What property is used below?

10 ( 3 + y) = 30 + 10y

Distributive Property

500

What property is used below?

(5 + p) + m = m + (5 + p)

Commutative Property

Distributive Property

100

Simplify.

2(6a + 5)

12a + 10

200

Simplify.

-4(3a - 4)

-12a + 16

300

Simplify.

10(1 - 4n)

-40n + 10

400

Simplify

 5(5 - 4w)

-20w + 25

500

Which expression is equivalent to 9m + 15?

A) 3(3m + 4)

B) 3(3m + 5)

C) 3(3m + 15)

B) 3(3m + 5)

      

Simplify Expressions

100

Simplify.

-12a + 7 + 6a - 3

-6a + 4

200

Simplify.

8 - 5x - 6x

8 - 11x

-11x + 8

300

Add (5x + 6) + (3x - 4)

8x + 2

400

Simplify.

-10(5 + x) - 7x

-50 - 17x

-17x - 50

500

Simplify.

2(a - 4) + 6a + 3

8a - 5

Equations

100

10 + m = 20

m = 10

200

-5m = 20

m = -4

300

3x - 4 = 14

x = 6

400

-2x + 2 = -14

x = 8

500

(f - 9) / -3 = -21

f = 16

Word Problems

100

A soda costs $4 less than a hot dog. The soda is $1.25. Write an equation represents this situation? 

x = cost of a hot dog

1.25 = x - 4

200

Ryan had $20.  He spent money on three pens. After buying them he had $8. How much did each pen cost?

$4

300

While at Disney, you bought a pair of Mickey Ears for $24 and three t-shirts. You spent a total of $66. How much was each t-shirt?

$14

400

Write the equation for the following word problem:

You bought a magazine for $6 and some notebooks for $3 each. You spent a total of $18. How many notepads did you buy?

x=notepads you bought

18 = 3x + 6

500

Kaci bought soil at Home Depot. She used 10 pounds to fill a hole in her yard. Then she evenly split the remaining soil inot pots with 5 pounds of soil in each pot. How many pots could she fill, if she bought a total of 45 pounds?

7 pots