Percent Word Problems

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare quantities.

Front

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

Back

To find the total number of items, divide the number of items you have by the percent (in decimal form) you know.

Front

If 45% of a collection is made up of quarters and there are 36 quarters, how do you find the total number of coins?

Back

Total coins = Number of quarters / Percent as a decimal = 36 / 0.45 = 80 coins.

Front

What is the formula to calculate the percent of a total?

Back

Percent = (Part / Total) x 100.

Front

If a family has driven 280 miles out of 400 miles, how do you calculate the percent driven?

Back

Percent driven = (280 / 400) x 100 = 70%.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and multiply by 100.

Front

What is 3/5 as a percent?

Back

3/5 = 0.6 x 100 = 60%.

Front

If 18 out of 24 students passed a test, how do you find the percent that did not pass?

Back

Students who did not pass = 24 - 18 = 6. Percent not passing = (6 / 24) x 100 = 25%.

Front

What does it mean if 30% of a group is a certain type?

Back

It means that out of every 100 members of the group, 30 are that type.

Front

How do you find the number of items that represent a certain percent of a total?

Back

Multiply the total number of items by the percent (in decimal form).