Ratios Review

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What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

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How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 3:2), as a fraction (e.g., 3/2), or with the word 'to' (e.g., 3 to 2).

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CCSS.6.RP.A.1

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What does it mean if a ratio is simplified?

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A simplified ratio means that the numbers in the ratio have been reduced to their smallest whole number form.

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CCSS.6.RP.A.1

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Front

If there are 3 red balls and 5 blue balls, what is the ratio of red to blue?

Back

The ratio of red to blue is 3:5.

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CCSS.6.RP.A.1

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Front

How do you find the total number of items in a ratio?

Back

To find the total, add the parts of the ratio together. For example, in a ratio of 2:3, the total is 2 + 3 = 5.

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CCSS.6.RP.A.1

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Front

What is the ratio of 10 apples to 5 oranges?

Back

The ratio of apples to oranges is 10:5, which simplifies to 2:1.

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CCSS.6.RP.A.1

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How do you compare ratios?

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To compare ratios, convert them to fractions and find a common denominator or cross-multiply.

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CCSS.6.RP.A.3A

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What is a part-to-part ratio?

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A part-to-part ratio compares different parts of a whole, such as the ratio of boys to girls in a class.

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CCSS.6.RP.A.1

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What is a part-to-whole ratio?

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A part-to-whole ratio compares a part to the entire group, such as the ratio of red cars to all cars.

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CCSS.6.RP.A.1

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Front

If a recipe calls for 2 cups of flour and 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

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CCSS.6.RP.A.1

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