Real Number Vocabulary for Grade 8

Front

All rational and irrational numbers

Back

Real Numbers

Front

Numbers that can be expressed as \frac{a}{b}, where a and b are integers, b ≠ 0

Back

Rational Numbers

Front

Numbers that cannot be expressed as \frac{a}{b}, like \sqrt{2} or \pi

Back

Irrational Numbers

Front

Whole numbers and their negatives, e.g., -3, 0, 4

Back

Integers

Front

Non-negative integers, e.g., 0, 1, 2, 3

Back

Whole Numbers

Front

Positive integers, e.g., 1, 2, 3

Back

Natural Numbers

Front

Distance from zero on the number line, e.g., |-5| = 5

Back

Absolute Value

Front

A number that, when added to the original number, results in zero, e.g., 5 and -5

Back

Additive Inverse

Front

a + b = b + a

Back

Commutative Property of Addition

Front

a ⋅ b = b ⋅ a

Back

Commutative Property of Multiplication