7-8th Grade Skill Review

CLT

100

14m +9m (-2m)

21m

200

10p - 8p + 5 p

7p

300

-5y - 8y - 3y

-16y

400

12w + 6z - 8w - 6z

4w

500

25 + 11v - 15 - 9v

2v +10

Distribution

100

9(2g + 3)

18g +27

200

3(11j - 4)

33j - 12

300

-5(-4f - 5)

20f +25

400

1/4(20k + 16)

5k + 4

500

-6(8d + 7)

-48d - 42

Substitution

100

x + y if x = -19 and y = 3

-16

200

h - g if h is 13 and g is -15

28

300

11m if m = -4

-44

400

-9a + 8 if a = -2

26

500

10k - 3n if k = 5 and n = 5

35

Square Roots

100

What is the square root of 289?

17

200

What is the square root of 121 minus 3 to the 3rd power?

-16

300

Estimate the square root of 148

12.3 ish

400

Evaluate:  5 to the 5th power

3,125

500

4² - 7² + 15² - 8²

128

2-step equations

100

3w - 5 = 10

w = 5

200

7y + 6 = -25

y = -3

300

-8g - 2 = 22

g = -3

400

f/2 + 10 = 35

f = 50

500

-2(5y - 4) = 30

y = -2.2