Ratio/ Rate/ Unit Rate

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:b.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common factor (GCF).

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

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 formula to calculate the cost per item?

Back

Cost per item = Total cost / Number of items.

Front

If a 12-pack of soda costs $3.50, what is the cost per can?

Back

Cost per can = $3.50 / 12 = approximately $0.29.

Front

What is the ratio of 4 triangles to 12 squares?

Back

The simplified ratio is 1:3.

Front

If there are 336 dimples in one golf ball, how many golf balls are needed for 2016 dimples?

Back

6 golf balls are needed.

Front

How do you calculate speed?

Back

Speed = Distance / Time.

Front

If Ernie travels 195 miles in 3 hours, what is his speed?

Back

Speed = 195 miles / 3 hours = 65 miles per hour.