Understanding Ratios

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What is a ratio?

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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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How do you write a ratio?

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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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How do you simplify a ratio?

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To simplify a ratio, divide both terms by their greatest common divisor (GCD).

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CCSS.6.RP.A.1

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What is the ratio of 8 apples to 4 oranges?

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The ratio of apples to oranges is 2:1 after simplification.

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CCSS.6.RP.A.1

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If there are 12 boys and 8 girls in a class, what is the ratio of boys to girls?

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The ratio of boys to girls is 3:2 after simplification.

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CCSS.6.RP.A.1

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What is the ratio of 5 red marbles to 15 blue marbles?

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The ratio of red marbles to blue marbles is 1:3 after simplification.

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CCSS.6.RP.A.1

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How do you find the total parts in a ratio?

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To find the total parts in a ratio, add the numbers in the ratio together.

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CCSS.6.RP.A.1

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What is the total parts in the ratio 3:5?

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The total parts in the ratio 3:5 is 8 (3 + 5).

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CCSS.6.RP.A.1

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

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The ratio of flour to sugar is 2:3.

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CCSS.6.RP.A.1

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