Rates and Ratios Review

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What is a ratio?

Back

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 simplify a ratio?

Back

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

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What is a unit rate?

Back

A unit rate is a comparison of a quantity to one unit of another quantity, often expressed as 'x per 1 unit'.

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How do you find the unit rate from a total cost and quantity?

Back

Divide the total cost by the quantity to find the cost per unit.

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What is the ratio of blue marbles to red marbles if there are 3 blue and 7 red?

Back

The ratio is 3:7.

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CCSS.6.RP.A.1

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If you have 10 apples and 4 are red, what is the ratio of red apples to total apples?

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The ratio is 4:10, which simplifies to 2:5.

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What is the price per product if 8 products cost $14.00?

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The price per product is $1.75.

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If Sarah spends 15 minutes on 5 calls, how long will she spend on 12 calls?

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She will spend 36 minutes.

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CCSS.6.RP.A.3B

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What is the ratio of school apps to game apps if there are 5 school apps and 3 game apps?

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The ratio is 5:3.

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CCSS.6.RP.A.1

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Front

How do you express a ratio in simplest form?

Back

Divide both parts of the ratio by their GCD.

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