Percent Proportions

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you find a percentage of a number?

Back

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

Front

What is the formula to find what percent one number is of another?

Back

The formula is: (Part/Whole) * 100 = Percent. For example, to find what percent 8 is of 20, use (8/20) * 100 = 40%.

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. For example, 1/4 = (1 ÷ 4) * 100 = 25%.

Front

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

Back

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

Front

What is 34% of 150?

Back

34% of 150 is 51. (150 * 0.34 = 51)

Front

What is 40% of 80?

Back

40% of 80 is 32. (80 * 0.40 = 32)

Front

If 78 is 17% of what number, what is that number?

Back

The number is 450. (78 = 0.17 * Number, so Number = 78 / 0.17 = 450)

Front

What percent of 50 is 20?

Back

40%. (20/50) * 100 = 40%.

Front

What is 15% of 82?

Back

15% of 82 is 12.3. (82 * 0.15 = 12.3)