Evaluate Expressions

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

What is the first thing you do when evaluating an expression?

Back

Substitute value in for the variable

Front

Evaluate (s – 5)² if s = 13

Back

64

Front

Evaluate m² – 15 if m = 8

Back

49

Front

Evaluate r(r – 9) if r = 11

Back

22

Front

What does it mean to evaluate an expression?

Back

To find the value of the expression by substituting values for the variables.

Front

What is a variable in an expression?

Back

A symbol (like x or r) that represents a number that can change.

Front

What is the order of operations used when evaluating expressions?

Back

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Evaluate 3x + 4 if x = 2

Back

10

Front

Evaluate 5(y - 2) if y = 6

Back

20