Ratios and Rates

Front

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 fraction a/b.

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 rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or dollars per pound.

Front

How do you find the unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, if you spend $40 on 5 pounds of concrete, the unit rate is $40 ÷ 5 = $8 per pound.

Front

If Justin types 408 words in 4 minutes, how many words does he type per minute?

Back

102 words per minute.

Front

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

Back

6 to 1.

Front

What is the missing number in the ratio table if the ratio is 88 to 100?

Back

88.

Front

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

Back

$8 per pound.

Front

Jose swims 3 laps in a pool every 2 minutes. How long would it take him to swim 27 laps?

Back

18 minutes.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.