Unit Rates and Percentages

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity of one item by the quantity of another item, ensuring the second quantity is 1.

Front

If 5 apples cost $3, what is the cost per apple?

Back

$0.60 per apple (calculated as $3 ÷ 5 apples).

Front

What is 100% of a number?

Back

100% of a number is equal to the number itself.

Front

How do you find 30% of a number?

Back

To find 30% of a number, multiply the number by 0.30.

Front

What is the formula to convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

If a kangaroo hops 2 kilometers in 3 minutes, what is its speed in kilometers per minute?

Back

The speed is 0.67 kilometers per minute (calculated as 2 km ÷ 3 min).

Front

How long does it take a kangaroo to travel 5 kilometers at a speed of 2 kilometers in 3 minutes?

Back

It takes 7.5 minutes to travel 5 kilometers.

Front

If Han practiced piano for 80 minutes and practiced 30% of that time on Friday, how long did he practice?

Back

Han practiced for 24 minutes on Friday.

Front

What is the relationship between percentages and fractions?

Back

Percentages are a way to express a fraction out of 100. For example, 25% is equivalent to 25/100.