Ratios and Unit Rates 6th Summer

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 find the unit rate?

Back

To find the unit rate, divide the total quantity by the number of units. For example, if a car travels 440 miles in 8 hours, the unit rate is 440 miles ÷ 8 hours = 55 miles per hour.

Front

What does it mean if a ratio is written as X:Y?

Back

It means that for every X units of the first quantity, there are Y units of the second quantity.

Front

Identify the incorrect way to write a ratio: X : Y, X and Y, X/Y, X to Y.

Back

X and Y is the incorrect way to write a ratio.

Front

If the ratio of tenants to cars is 3:5 and there are 30 tenants, how many cars are there?

Back

50 cars.

Front

What is a unit rate in the context of money earned?

Back

A unit rate in this context is the amount of money earned per hour, calculated by dividing total earnings by total hours worked.

Front

Calculate the unit rate if Mr. Keys made $90 in 5 hours.

Back

$18 per hour.

Front

If you spend $40 on 5 pounds of concrete, what is the unit rate in dollars per pound?

Back

$8 per pound.

Front

What is the formula to convert a ratio to a fraction?

Back

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

Front

What does it mean if a unit rate is expressed as 'miles per hour'?

Back

It indicates the number of miles traveled in one hour.