evaluate expressions by substitution

Front

Evaluate 4y if y = 3

Back

12

Front

6h + 30; Solve if h = 6

Back

66

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

5(v + 1) if v = 4

Back

25

Front

4y – 5 if y = 6

Back

19

Front

What does 'evaluate an expression' mean?

Back

To find the value of an expression by substituting numbers for variables.

Front

What is substitution in mathematics?

Back

Replacing a variable in an expression with a specific value.

Front

If x = 2, what is the value of 3x + 4?

Back

10

Front

Evaluate 7a - 3 if a = 5

Back

32

Front

What is the first step in evaluating an expression?

Back

Identify the values of the variables.