Expressions and Equations Review

Combining Like Terms

100

x + x + x + x + x

5x

200

2x + 4x + 3 - 1

6x + 2

300

8x + 3y - 6x + 4y

2x + 7y

400

(18x + x + x + x)3

63x

500

x + 2x + 3x - x + 10x + 4 +3x - 2

18x +2

One-Step Equations

100

Solve:  x - 8 = 13

x = 21

200

Solve:  3x = 24

x = 8

300

Solve x ÷ 8 = 16

x = 128

400

Solve x - 3.6 = 12.1

x = 15.7

500

Solve 4x = 30

x = 7.5

Equivalent Expressions

100

Simplify: 3(x - 4)

3x - 12

200

Simplify (3x - 4)20

60x - 80

300

Write an expression equivalent to 6x + 15 using the distributive property.

3(2x + 5)

400

Which expressions below are equivalent to 8x + 12y?

A. 2(4x - 6y)

B. 4(2x + 12y)

C. x(8 + 12y)

D. 4(2x + 3y)

D

500

Rewrite the expression 10(x³ + 2x² + 6x + 8) using the distributive property.

10x³ + 20x² + 60x + 80

Fractions and Expressions

100

What is 3/4 of 16?

12

200

Find 5/7 of 35.

25

300

Find 4/9 of 72.

32

400

Find 3/8 of 64.

24

500

How many students are in a school if 2/5 of the students are 6th graders and there are 200 sixth graders?

500

Evaluating Expressions

100

Evaluate 3⁴.

81

200

Evaluate 3x + 4y if x =2 and y =3.

18

300

Evaluate 4*2^y if y = 4.

64

400

Evaluate 3² + 4*(3 - 2)

13

500

Evaluate 7 + 3x - 4y³ if x =5 and y =1.

18