Evaluating Expressions

Front

Evaluate y + 17 if y = 11

Back

28

Front

Write an algebraic expression for "8 less than a number".

Back

x - 8

Front

Write an algebraic expression for "a number subtracted from eight".

Back

8 - n

Front

Evaluate 5x + 4y if x=3 and y=2

Back

23

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

What is an algebraic expression?

Back

A mathematical phrase that can include numbers, variables, and operation symbols.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is a variable in mathematics?

Back

A symbol, often a letter, that represents an unknown value.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equals sign, while an equation does.

Front

How do you simplify the expression 3a + 4a?

Back

Combine like terms to get 7a.