Expressions and Equations

Front

Which phrase matches the expression y - 6?

Back

A number, y, decreased by 6.

Front

Evaluate using correct order of operations: 16 - 4(7 + 1) ÷ 2²

Back

8

Front

Identify the variable(s) in the expression 5x + 1 + 3x² + 7.

Back

x and x².

Front

Evaluate using correct order of operations: 12 - 2 ⋅ 4

Back

4.

Front

Identify the constants in the expression 3 + 4x - 2x + 5.

Back

3 and 5.

Front

What is an expression?

Back

A combination of numbers, variables, and operators without an equality sign.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

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 variable?

Back

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

Front

What is a constant?

Back

A fixed value that does not change.