Ratios & Equivalent Ratios

Front

What is a ratio?

Back

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

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How do you express a ratio?

Back

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

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What is an equivalent ratio?

Back

Equivalent ratios are ratios that express the same relationship between two quantities, even if the numbers are different (e.g., 2:3 is equivalent to 4:6).

Front

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

Back

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

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In a class, the ratio of boys to girls is 3:5. If there are 15 boys, how many girls are there?

Back

There are 25 girls in the class.

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What is the ratio of chocolate chips to flour in a recipe that uses 3 cups of flour and 2 cups of chocolate chips?

Back

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

Front

If the ratio of blue to red marbles is 3:4 and there are 12 blue marbles, how many red marbles are there?

Back

There are 16 red marbles.

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What does it mean if two ratios are equivalent?

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It means that they represent the same relationship between the two quantities, even if the numbers are different.

Front

How can you find missing values in a ratio table?

Back

You can find missing values by using equivalent ratios and cross-multiplication.

Front

If the ratio of moons to suns is 4:8, what is the simplified ratio?

Back

The simplified ratio is 1:2.