Ratios, Rates, & Proportions

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, 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 rate in which the second quantity is 1. For example, if you travel 60 miles in 1 hour, the unit rate is 60 miles/hour.

Front

How do you convert a rate to a unit rate?

Back

To convert a rate to a unit rate, divide the first quantity by the second quantity.

Front

What is the simplest form of the ratio 2 meters to 76 centimeters?

Back

50:19.

Front

How do you determine the better deal between two options?

Back

Calculate the unit price for each option and compare them. The lower unit price is the better deal.

Front

What is the unit rate for 31.20 for 15 gallons of gas?

Back

$2.08/gallon.

Front

What is the simplest form of the ratio 12 feet to 9 yards?

Back

4:9.

Front

How do you find the unit rate for distance traveled over time?

Back

Divide the total distance by the total time.

Front

What is the unit rate for 476 miles in 8 hours?

Back

59.5 miles/hour.