Variables and Expressions

Front

Evaluate the expression if a=3 and b=4: ab ÷ 3

Back

4

Front

Evaluate the expression if a=3 and b=4: 2a + 8

Back

14

Front

Evaluate the expression when x = 10: (x + 2) ÷ 6

Back

2

Front

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

Back

operation

Front

The number or constant in this expression is ____ ? 6 + n

Back

6

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What is an expression in mathematics?

Back

A combination of numbers, variables, and operations.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is a constant in an expression?

Back

A fixed value that does not change.

Front

What is the difference between an equation and an expression?

Back

An equation has an equal sign, while an expression does not.