Intro To Ratios

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What is a ratio?

Back

A ratio is a mathematical way to compare two or more quantities, showing the relative size of one quantity to another.

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How do you write a ratio?

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A ratio can be written in three ways: using a colon (e.g., 4:5), as a fraction (e.g., 4/5), or with the word 'to' (e.g., 4 to 5).

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What does the first number in a ratio represent?

Back

The first number in a ratio represents the quantity of the first item being compared.

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What does the second number in a ratio represent?

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The second number in a ratio represents the quantity of the second item being compared.

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Front

If there are 4 monkeys and 5 bananas, what is the ratio of monkeys to bananas?

Back

4:5

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If there are 5 red circles and 5 total circles, what is the ratio of red circles to total circles?

Back

5:5 or 1:1

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Front

What is the ratio of squares to circles if there are 4 squares and 7 circles?

Back

4:7

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If there are 10 apples and 6 bananas, what is the ratio of apples to bananas?

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10:6

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True or False: A ratio can only compare two quantities.

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False. A ratio can compare two or more quantities.

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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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