Cluster 3: Ratio Reasoning

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ratio

a comparison between quantities

tape diagram

a model used to show quantities in a ratio

unit ratio

a ratio expressed as an amount per 1 unit, or 1 per an amount

part-to-part ratio

a ratio that compares a part to a part

part-to-whole ratio

a ratio that compares a part to a whole

multiplicative relationship

a relationship between equivalent ratios when they are scaled up or down using multiplication or division (not addition/subtraction)

ratio table

a table of equivalent ratios

equivalent ratio

ratios that share the same unit ratio


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