Ratios and Equivalent Ratios

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What is a ratio?

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A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or 'a:b'.

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How do you write the ratio of chocolate chips to flour if a recipe calls for 3 cups of flour and 2 cups of chocolate chips?

Back

The ratio of chocolate chips to flour is 2:3.

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What is an equivalent ratio?

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Equivalent ratios are two or more ratios that express the same relationship between numbers, such as 1:2 and 2:4.

Front

If a recipe requires 4 cups of sugar for every 2 cups of flour, what is the ratio of sugar to flour?

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The ratio of sugar to flour is 4:2, which simplifies to 2:1.

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How can you determine if two ratios are equivalent?

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Two ratios are equivalent if they can be simplified to the same fraction.

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What is the ratio of red toy cars to all toy cars if Patrick has 2 black, 3 red, and 5 white toy cars?

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The ratio of red toy cars to all toy cars is 3:10.

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If a class has 16 boys and 32 girls, what is the ratio of girls to boys in simplest form?

Back

The ratio of girls to boys is 2:1.

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What is the ratio of 15 to 25 in simplest form?

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The ratio of 15 to 25 simplifies to 3:5.

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If you have 12 apples and 8 oranges, what is the ratio of apples to oranges?

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The ratio of apples to oranges is 12:8, which simplifies to 3:2.

Front

How do you express the ratio of 5 to 10 as a fraction?

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