Front

Equations

Back

Number sentence with the answer

Front

Inequalities

Back

Not equal

Front

Multiple steps

Back

More than one step

Front

Variable

Back

Letter or symbol in number sentence

Front

Natural numbers

Back

Counting numbers, not including zero

Front

Whole numbers

Back

Counting numbers including zero

Front

Integers

Back

All whole numbers AND their opposites

Front

Rational numbers

Back

Positive and negative numbers, including fractions and repeating/terminating decimals

Front

Irrational numbers

Back

Numbers that cannot be rewritten as a fraction. Not rational

Front

Set

Back

A collection of numbers