Mathematical Concepts and Terminology

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is greater than

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number line

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A line with numbers on it in order at regular intervals.

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digit

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A symbol used to write numbers.

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is equal to

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=

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word form

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The form of a number that uses written words.

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expanded form

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The representation of a number as a sum that shows the value of each digit.

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place value

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The value given to a digit by its place in a number.

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period

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The name given to each group of three digits in a place-value chart.

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standard form

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The usual way of writing a number that shows only its digits, no words.

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is less than

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