Percent Proportions

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. Formula: (Part/Whole) x 100.

Front

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

Back

The formula is: Whole = Part / (Percent/100).

Front

If 15 out of 25 boys chose to go swimming, what percent is that?

Back

60%.

Front

What is 2% of 35?

Back

0.7.

Front

If Joey gives away 3 out of 20 coins, what percent does he give away?

Back

15%.

Front

What percent of $90 is $9?

Back

10%.

Front

If 26 is 5% of a number, how do you find that number?

Back

Use the formula: Number = 26 / (5/100) = 520.

Front

What does it mean if a number is 100% of another number?

Back

It means that the two numbers are equal.

Front

How do you convert a fraction to a percent?

Back

Divide the numerator by the denominator and multiply by 100.