Unit 3: 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 one unit. For example, if a car travels 300 miles in 5 hours, the unit rate is 60 miles per hour.

Front

How do you convert pounds to kilograms?

Back

To convert pounds to kilograms, multiply the number of pounds by 0.45. For example, 10 pounds is approximately 4.5 kilograms.

Front

What is the ratio of chocolate chip cookies to sugar cookies if there are 6 chocolate chip cookies for every 2 sugar cookies?

Back

The ratio is 6:2, which can be simplified to 3:1.

Front

If Lucy makes 96 sugar cookies and the ratio of chocolate chip cookies to sugar cookies is 3:1, how many chocolate chip cookies does she need?

Back

She needs 288 chocolate chip cookies because for every 1 sugar cookie, she needs 3 chocolate chip cookies (96 x 3 = 288).

Front

What is the formula to convert kilograms to pounds?

Back

To convert kilograms to pounds, multiply the number of kilograms by 2.2. For example, 10 kilograms is approximately 22 pounds.

Front

What is pace in terms of movement?

Back

Pace is the speed at which an object is moving, often expressed as distance per unit of time, such as miles per hour.

Front

How many inches are in 1.5 meters?

Back

1.5 meters is approximately 59 inches, since 1 meter is about 39.37 inches.

Front

If 100 inches equals 254 centimeters, how many centimeters are in 1 inch?

Back

1 inch is approximately 2.54 centimeters.

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. For example, 50% means 50 out of 100.

Front

How do you find the total number of items when given a ratio?

Back

To find the total number of items, add the parts of the ratio together and then multiply by the number of times the ratio fits into the total. For example, in a 6:2 ratio, the total parts are 8.