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 calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 15% of 82, calculate 82 * 0.15 = 12.3.

Front

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

Back

The formula is: (Part/Whole) * 100. For example, to find what percent 20 is of 50, calculate (20/50) * 100 = 40%.

Front

If 8 is what percent of 20, how do you find the answer?

Back

Use the formula: (Part/Whole) * 100. Here, (8/20) * 100 = 40%.

Front

What is 90% of 250?

Back

90% of 250 is calculated as 250 * 0.90 = 225.

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

How do you find the percent increase or decrease?

Back

To find percent increase: ((New Value - Original Value) / Original Value) * 100. For decrease, use: ((Original Value - New Value) / Original Value) * 100.

Front

What is 25% of 200?

Back

25% of 200 is calculated as 200 * 0.25 = 50.

Front

If 30 is what percent of 40, how do you find the answer?

Back

Use the formula: (30/40) * 100 = 75%.