Percentages and Unit Rates Review

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It represents how many parts out of 100 something is.

Front

How do you calculate the percentage of a part compared to a whole?

Back

To calculate the percentage, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What is the percentage of 15 oranges out of 20 pieces of fruit?

Back

75%.

Front

If Julie types 300 words in 5 minutes, how many words can she type in 1 hour?

Back

3600 words.

Front

How do you find 90% of a number?

Back

Multiply the number by 0.90.

Front

Calculate 90% of 30.

Back

27.

Front

What is 30% of 600?

Back

180.

Front

How do you calculate a percentage of a total time?

Back

Multiply the total time by the percentage (as a decimal).

Front

If Han practiced 30% of 80 minutes, how long did he practice?

Back

24 minutes.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity per 1 unit.