Unit 2 Quiz Review (Expressions)

Combining Like Terms

100

14m + 6r - 11 - 9m + 1

5m +6r - 10

200

25x + 16s - 3x + 9 + 2s + 5

22x + 18s + 14

300

3r - 1 + 6s + 9r - 3s + 9

12r + 3s + 8

400

12x + 11s - 8x + 12 - 5s - 12

4x + 6s

500

-9 + 4x -12s +2x - 6 - 4s

6x -16s - 15

Equivalent Expressions

100

Are 3x + 3 and 3x(1 + 1) equivalent expressions? 

No, they are not equivalent expressions. 

200

Are 3x(2 + 4) and 18x equivalent expressions?

Yes, they are equivalent expressions because 3x * 2 is 6x and 3x * 4 is 12x. 6x + 12x = 18x

300

Are 2x + x - x + 4x and 7x equivalent expressions?

No, they are not equivalent expressions because 2x + x -x = 2x  and 2x + 4x = 6x

400

Are -4x - 16 and -2(2x - 8) equivalent expressions?

no

500

Are -8x -14 and 11 - 8(x + 3) - 1 equivalent expressions?

yes 

Distributive Property

100

3(6x + 2)

18x + 6

200

9(4 - 2x)

36 - 18x  or -18x + 36

300

6(2x - 6) + 2

12x - 36

400

-5(2x+1) 

-10x - 5

500

8(4x + 3x) - 2x + 81

54x + 81

Order of Operations

100

23 + 9 - (4⋅8)

0

200

(9⋅2) ÷ 3 + 14

20

300

(6 ÷ 3⋅ -2)²

16

400

13 + (12 - 5)² ⋅ 4 ÷ 2

111

500

(38 ⋅ 3 - 20 ÷ 2 - 3³ ) / (-9 - 2)

-7

Evaluating Expressions

100

Evaluate 4(y-5) 

if y=9

16

200

Evaluate  5 + (t ⋅ n) 

if t = 9  n = 4

41

300

Evaluate  7(x+3)     if x = 6  

63

400

Evaluate    (12b + 45)/3   if  b= -2

7

500

Evaluate    10 - (16x + 2y)    if x = -2,  y = -8

58