Percents, Fractions and Decimals Lesson 2.1

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 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 then multiply by 100. For example, 1/4 = (1 ÷ 4) × 100 = 25%.

Front

What is a decimal?

Back

A decimal is a way of representing numbers that are not whole numbers. It uses a point to separate the whole part from the fractional part. For example, 0.75 is a decimal.

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100. For example, 0.6 × 100 = 60%.

Front

What is the relationship between fractions, decimals, and percents?

Back

Fractions, decimals, and percents are different ways to represent the same value. For example, 1/2 = 0.5 = 50%.

Front

What does it mean if a percent is greater than 100%?

Back

A percent greater than 100% indicates that the amount is more than the whole. For example, 150% means 150 out of 100, or 1.5 times the whole.

Front

How do you find the percent of a number?

Back

To find 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 the percent equivalent of 3/4?

Back

To find the percent equivalent of 3/4, divide 3 by 4 to get 0.75, then multiply by 100 to get 75%.

Front

If 25% of a number is 20, what is the number?

Back

To find the number, divide 20 by 0.25 (which is 25% as a decimal). So, 20 ÷ 0.25 = 80.

Front

What is the decimal equivalent of 15%?

Back

To convert 15% to a decimal, divide by 100. So, 15% = 15 ÷ 100 = 0.15.