Place Value Vocabulary

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Place Value

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The value of a digit based on its position within a number.

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Estimate

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To find a value that is close enough to the correct answer, usually by rounding.

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Expanded Form

Back

A way of writing a number that shows the sum of the values of each digit.

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Period

Back

A group of three digits in a large number, separated by a comma.

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Regroup

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To rearrange numbers in place value columns to make a calculation easier; often called 'borrowing' or 'carrying.'

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Round

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To approximate a number to a specific place value.

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Standard Form

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The usual way of writing a number using digits.

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Word Form

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A way of writing a number using words.