Numbers And Operations: Math Terms Explained

Plain-language definitions of every numbers and operations term your child meets in school, each with kid-friendly explanations, worked examples, and common mistakes to watch for.

Whole number

A whole number is a number with no fractional or decimal part, such as 0, 7, 25, or 4,302, that can be used to count or measure complete units.

Word form

Word form is a way of writing a number using words instead of digits, such as writing 347 as "three hundred forty-seven" or 3/4 as "three fourths."

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