Percent of a Number

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 '%'.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (as a decimal). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is 35% of 80?

Back

28

Front

If 20% of a group of 15 markers are black, how many are black?

Back

3 black markers.

Front

What is the formula to find the percentage of correct answers?

Back

(Number of correct answers / Total number of questions) * 100.

Front

What is 10% of 15?

Back

1.5

Front

If 76% of questions are answered correctly, what fraction of questions were answered incorrectly?

Back

24% or 0.24.

Front

How do you convert a fraction to a percent?

Back

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

Front

What is 50% of 200?

Back

100

Front

If 12 out of 15 markers are not black, what percent are not black?

Back

80%.