Evaluating Algebraic Expressions

Translate this phrase into an algebraic expression.

• 57g + 3

• 3g - 57

• 3g + 57

• 57 - 3g

What term is represented by the algebra tiles?

• 6

• x+6

• 6x

• -6x²

Simplify.

Use a normal algebra tile key.

• 5x + 6

• 11x

• 11

• 6 - 5x

What expression is modeled here:

• 2x-3

• -2x-3

• -2x(3)

• -2x+3

What is the first thing you do when evaluating an expression

• Substitute value in for the variable

• Combine like terms

• Parenthesis

An algebraic expression must have a number (constant), a variable, and an ________________.

• letter

• solution

• operation

• equal sign

Evaluate the Expression if p = 7 17 - p

• 24

• -10

• 10

• -7

Evaluate the Expression if s = 10

24 + s

• 240

• 14

• 34

• 2410

Evaluate the expression if a = 3 and b = 4.

ab ÷ 3

• 11

• 4

• 3

• 1

Evaluate the expression if a = 3 and b = 4.

2a + 8

• 31

• 14

• 16

• 12