Ratios, Rates 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 in the form '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 comparison of 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?

Back

To find the unit rate, divide the total cost by the number of units.

Front

What is the formula to calculate the rate of travel?

Back

Rate of travel = Distance traveled / Time taken.

Front

If you travel 150 miles on 5 gallons, what is the unit rate in miles per gallon?

Back

30 miles per gallon.

Front

What is the ratio of squares to circles if there are 12 squares and 6 circles?

Back

The ratio is 2 : 1.

Front

How do you convert a ratio into a fraction?

Back

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

Front

What is the unit rate of 3 pounds of granola costing $3.75?

Back

$1.25 per pound.

Front

How do you calculate words typed per minute?

Back

Words per minute = Total words typed / Total minutes.