Mathematical Terms

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Quantity

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An amount or a number of something.

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Rate

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A related rate is an equivalent ratio that compares the first quantity in a ratio to only one of the second quantity.

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Ratio

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A way to compare two different quantities. Can be written as a fraction, using the word 'to', or using a colon.

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Unit rate

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A rate for one of something. We write this as a ratio with a denominator of one.