Percent of a Number

Front

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

Back

To find the percent of a number, convert the percent to a decimal and multiply it by the number.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is 50% of 200?

Back

100

Front

If 20% of a number is 30, what is the number?

Back

150 (30 divided by 0.20).

Front

What is 10% of 500?

Back

50

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

$30 (25% of $40 is $10, so $40 - $10 = $30).

Front

How do you find 15% of 60?

Back

Convert 15% to a decimal (0.15) and multiply by 60, which equals 9.

Front

What is 75% of 120?

Back

90

Front

If there are 200 students in a school and 60% are girls, how many girls are there?

Back

120 girls (60% of 200 is 120).

Front

What is the relationship between fractions and percentages?

Back

A percentage is a fraction out of 100.