Ratios and Rates

Front

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.

Front

How do you simplify a ratio?

Back

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

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per'.

Front

How do you find the unit rate from a ratio?

Back

To find the unit rate, divide the first quantity by the second quantity.

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Back

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Front

If a car travels 200 miles in 4 hours, what is the unit rate in miles per hour?

Back

50 miles per hour.

Front

If 2 hats cost $8.44, what is the cost per hat?

Back

$4.22 per hat.

Front

What is the ratio of girls to boys if there are 7 boys and 9 girls?

Back

9 to 7.

Front

What does it mean to express a ratio in simplest form?

Back

It means to reduce the ratio to its lowest terms where both numbers are as small as possible.