Ratios and Unit 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 express a ratio as a fraction?

Back

To express a ratio as a fraction, write the first quantity as the numerator and the second quantity as the denominator.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit of another quantity.

Front

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

Back

To find the unit rate, divide the total quantity by the number of units.

Front

Express the ratio 18 ounces to 3 cups as a fraction in simplest form.

Back

6 to 1.

Front

Find the unit rate of 624 calories in 3 servings.

Back

208 calories per serving.

Front

What is the ratio of apples in the fridge (20) to apples on the table (9)?

Back

20/9.

Front

What is the ratio of red marbles (2) to yellow marbles (5)?

Back

2:5.

Front

Which of the following expresses a ratio: 2/3, two-thirds, 0.667, or 2.3?

Back

2/3.

Front

How do you simplify a ratio?

Back

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