Ratios & 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 calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item, resulting in a rate per one unit.

Front

If 3 boxes of chocolates earn 15 points, how many points does 1 box earn?

Back

5 points per box.

Front

What is the unit rate of 120 customers in 8 hours?

Back

15 customers per hour.

Front

If a recipe calls for a ratio of sugar to flour of 7:3, how do you find the amount of flour needed if you have 63 ounces of sugar?

Back

Use equivalent fractions: (3/7) = (x/63), solving gives x = 27 ounces of flour.

Front

What is the price per gallon if 6 gallons of gasoline cost $15.00?

Back

$2.50 per gallon.

Front

How do you express a ratio in simplest form?

Back

Divide both terms of the ratio by their greatest common divisor.

Front

If you spend $40 on 5 pounds of concrete, how much do you spend per pound?

Back

$8 per pound.

Front

What is the relationship between ratios and fractions?

Back

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

Front

How can you use a table to find unit rates?

Back

Create a table with two columns, one for the quantity of the first item and one for the second, then calculate the unit rate for each row.