Unit Rates and Conversions (5.1)

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 value of one. For example, if you drive 60 miles in 1 hour, the unit rate is 60 miles per hour (mi/h).

Front

How do you convert feet per minute (ft/min) to yards per second (yd/s)?

Back

To convert ft/min to yd/s, divide the number of feet by 3 to convert to yards, and then divide by 60 to convert minutes to seconds. Formula: (ft/min) ÷ 3 ÷ 60.

Front

What is the conversion factor between miles and feet?

Back

1 mile = 5280 feet.

Front

How do you convert miles per hour (mi/h) to feet per second (ft/s)?

Back

To convert mi/h to ft/s, multiply the number of miles by 5280 (to convert to feet) and then divide by 3600 (to convert hours to seconds). Formula: (mi/h) × 5280 ÷ 3600.

Front

What is the conversion factor between pounds and ounces?

Back

1 pound = 16 ounces.

Front

How do you convert pounds per week (lb/wk) to ounces per day (oz/day)?

Back

To convert lb/wk to oz/day, multiply the number of pounds by 16 (to convert to ounces) and then divide by 7 (to convert weeks to days). Formula: (lb/wk) × 16 ÷ 7.

Front

How do you convert feet per hour (ft/h) to feet per minute (ft/min)?

Back

To convert ft/h to ft/min, divide the number of feet by 60. Formula: (ft/h) ÷ 60.

Front

What is the formula to find the unit rate?

Back

The formula to find the unit rate is: Total quantity ÷ Total time or Total quantity ÷ Total number of items.

Front

If you drive 394.5 miles in 6 hours, what is the unit rate in miles per hour?

Back

66 mi/hr.

Front

How do you round a number to the nearest whole number?

Back

To round a number to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up. If it is less than 5, round down.