Percent Word Problem Review

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, divide the part by the whole and then multiply by 100. For example, to find what percent 20 is of 50, calculate (20/50) * 100 = 40%.

Front

What does it mean if 40% of a group completed a task?

Back

It means that out of the total group, 40 out of every 100 members completed the task.

Front

If 12 out of 30 cars finished a race, how do you find the percent that finished?

Back

Divide 12 by 30 to get 0.4, then multiply by 100 to get 40%.

Front

What is the formula to find the total when given a part and its percent?

Back

The formula is: Total = Part / (Percent / 100). For example, if 14 is 20%, then Total = 14 / (20 / 100) = 70.

Front

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

Back

Multiply the total number of items by the percent (as a decimal). For example, if you have 40 CDs and 75% are rock, then Rock CDs = 40 * 0.75 = 30.

Front

What is the relationship between fractions and percents?

Back

Percents are a specific type of fraction where the denominator is always 100. For example, 25% is the same as 25/100.

Front

How can you convert a percent to a decimal?

Back

To convert a percent to a decimal, divide by 100. For example, 80% becomes 0.80.

Front

If you have completed 73% of your goal, how do you find the goal?

Back

To find the goal, divide the completed amount by the percent (as a decimal). For example, if 5840 steps is 73%, then Goal = 5840 / 0.73 = 8000.

Front

What does it mean if a student scores 80% on a test?

Back

It means the student answered 80 out of every 100 questions correctly.