Fractions Unit Vocabulary Flash Cards

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Benchmark Fractions

Back

Commonly used fractions like 1/2, 1/4, 3/4, which help to estimate the size of other fractions.

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Common Denominator

Back

A number that is the same in the bottom parts of two or more fractions. For example, in 1/4 and 2/4, the common denominator is 4.

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Composite Number

Back

A number that has more than two factors. For example, 6 is a composite number because it can be divided by 1, 2, 3, and 6.

Front

Decomposing Fractions

Back

Breaking a fraction into smaller parts, usually as a sum of fractions (e.g., 3/4 can be decomposed into 1/4 + 1/4 + 1/4).

Front

Denominator

Back

The bottom number in a fraction that tells how many equal parts the whole is divided into. For example, in 3/4, the denominator is 4.

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Equivalent Fraction

Back

Fractions that represent the same amount or value. For example, 1/2 and 2/4 are equivalent fractions because they both represent the same part of a whole.

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Factor

Back

A number that divides another number evenly, meaning there is no remainder. For example, 2 and 3 are factors of 6 because 2 × 3 = 6.

Front

Factor Pairs

Back

Two numbers that, when multiplied together, equal another number. For example, 2 and 3 are factor pairs of 6 because 2 × 3 = 6.

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Fraction

Back

A number that shows part of a whole. It is written with a numerator (top number) and a denominator (bottom number).

Front

Greatest Common Factor (GCF)

Back

The largest number that can divide both the numerator and the denominator of a fraction evenly.