Basic Ratios and Unit 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: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 unit rate?

Back

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

Front

If a recipe calls for 2 cups of flour and 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

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.

Front

What is the unit rate if 4 apples cost $2?

Back

The unit rate is $0.50 per apple.

Front

If the ratio of boys to girls in a class is 5:3 and there are 40 students, how many girls are there?

Back

There are 12 girls.

Front

What does it mean to have a ratio of 1:4?

Back

It means for every 1 of the first quantity, there are 4 of the second quantity.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio 'a:b' to a fraction, write it as a/b.

Front

If 60 students are divided into groups of 5, how many groups are there?

Back

There are 12 groups.