Evaluating Algebraic Expressions

Evaluate the expression:

2 + m if m = 7

• 5

• 27

• 9

• 72

A variable is a

• number

• letter that represents a number

Evaluate the expression:

3h + 2 for h=10

• 20

• 32

• 24

• 38

Name the variable: 20 - 2x

• 20

• 2

• x

• a

Evaluate the expression:

4w - 3y if w = 7 and y = 6

• 24

• 21

• 10

• 46

Evaluate the expression:

3b + 4c if b = 9 and c = 3

• 27

• 12

• 15

• 39

Evaluate the expression:

5m + 7 if m = 5

• 12

• 25

• 32

Which of the following expressions contains a variable?

• 7+3

• 144÷12

• 7 + 15n

• 6(5)

Evaluate m² if m = 7.

• 14

• 49

Evaluate n³ if n = 5.

• 15

• 125