Chapter 3 Review

Parts of an Expression

100

What are the variables in the following expression?

-7r + 9x + 2c + 9

c, r, x

200

What are the coefficients in the following expression?

-10x + 8 - 9 + 4f + w

-10, 4, 1

300

What are the constants in the following expression? 

5x + 8x - 10 + 7r + 11

-10, 11

400

What are the like terms in the following expression?

-9x + 8x - 7r + 12r - 1

-9x, 8x and -7r, 12r

500

What are the like terms in the following expression?

3 + 2x² + 4x - 10 + 4x²

3, -10 and 2x², 4x²

Combine Like Terms

100

Simplify the expression: 

10x + 7x - 10

17x - 10

200

Simplify the expression: 

-9r + 5r - 1

-4r - 1

300

Simplify the expression: 

-14x + 8 + 2x + 8

-12x + 16

400

Simplify the expression: 

1.4x + 9c - 0.3x - 12c

-3c + 1.1x 

500

Simplify the expression: 

-2x - 8 - 5x - 10 - 2c + 2

-2c - 7x - 6

Add Expressions

100

Add the expressions: 

(2x + 8) + (2x + 8)

4x + 16

200

Add the expressions: 

(-3x + 7) + (5x - 2)

2x + 5

300

Add the expressions: 

(-9c - 8) + (-10c - 3) 

-19c - 11

400

Add the expressions: 

(3.25x + 0.60) + (-1.20x - 0.25) 

2.05x + 0.35

500

Add the expressions: 

(-2/3x - 1/2) + (1/2x + 1/2)  

-1/6x

Subtract Expressions

100

Subtract the expressions:

(3x + 5) − (2x − 4) 

x + 9

200

Subtract the expressions: 

(4a − 7) − (3a + 2)

a - 9

300

Subtract the expressions:

(2.5x + 3.7) − (1.3x − 4.2)

1.2x + 7.9

400

Subtract the expressions:

(5.4y − 2.1) − (3.2y + 1.5)

2.2y − 3.6

500

(7/8c + 10) - (2/3c - 1/2) 

5/24c + 10 1/2 

Distributive Property

100

Simplify the expression:

2(3x + 8) 

6x + 16

200

Simplify the expression: 

-3(-4x + 2) 

12x - 6

300

Simplify the expression: 

-5(-7r - 10) + 2 

35r + 52

400

Simplify the expression: 

3 + 5(-2x - 3) 

-10x - 12 

500

Simplify the expression: 

1/2(6x + 10x) - 4x 

4x