Equivalent Ratios and Ratio Tables

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another.

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How do you write a ratio?

Back

A ratio can be written using a colon (:), as a fraction, or with the word 'to'. For example, 3:4, 3/4, or 3 to 4.

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What are equivalent ratios?

Back

Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different. For example, 2:3 and 4:6 are equivalent ratios.

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How can you find equivalent ratios?

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You can find equivalent ratios by multiplying or dividing both terms of the ratio by the same non-zero number.

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What is a ratio table?

Back

A ratio table is a table that displays pairs of numbers that form equivalent ratios.

Front

If the ratio of apples to oranges is 2:3, how many oranges are there if there are 10 apples?

Back

There are 15 oranges. (Using the equivalent ratio: 2/3 = 10/x, solve for x.)

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What is the simplest form of the ratio 10:15?

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The simplest form of the ratio 10:15 is 2:3.

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How do you simplify a ratio?

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To simplify a ratio, divide both terms by their greatest common factor (GCF).

Front

If a recipe calls for a ratio of 4:5 of flour to sugar, how much sugar is needed for 8 cups of flour?

Back

10 cups of sugar are needed. (Using the equivalent ratio: 4/5 = 8/x, solve for x.)

Front

What is the missing number in the ratio table if the ratio is 3:5 and the first term is 9?

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The missing number is 15.