Unit Rates and Percentages

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if a car travels 150 miles in 3 hours, the unit rate is 50 miles per hour.

Front

How do you calculate a percentage?

Back

To calculate a percentage, divide the part by the whole and then multiply by 100. For example, if there are 6 blue jellybeans out of 30, the percentage of blue jellybeans is (6/30) * 100 = 20%.

Front

If a kangaroo hops 2 kilometers in 3 minutes, how far does it travel in 1 minute?

Back

To find the distance traveled in 1 minute, divide the distance by the time: 2 km / 3 min = 2/3 km per minute.

Front

What is the formula for finding the unit rate?

Back

The formula for finding the unit rate is: Unit Rate = Total Quantity / Number of Units.

Front

How do you convert feet to inches?

Back

To convert feet to inches, multiply the number of feet by 12, since 1 foot = 12 inches.

Front

What is the relationship between kilometers and miles?

Back

1 kilometer is approximately equal to 0.621371 miles.

Front

If a car travels 110 miles in 2 hours, what is its speed in miles per hour?

Back

To find the speed, divide the distance by the time: 110 miles / 2 hours = 55 mph.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another. For example, the ratio of 2 apples to 3 oranges can be written as 2:3.

Front

How do you find the total distance traveled if you know the speed and time?

Back

Total Distance = Speed x Time. For example, if a car travels at 60 mph for 2 hours, the total distance is 60 mph x 2 hours = 120 miles.

Front

What is the percent formula?

Back

The percent formula is: Percent = (Part / Whole) x 100.