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 75% of 92, calculate 92 * 0.75 = 69.

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 7 is of 56, calculate (7/56) * 100 = 12.5%.

Front

If 120 is what percent of 40, how do you find the answer?

Back

Use the formula: (Part/Whole) * 100. Here, Part = 120 and Whole = 40. So, (120/40) * 100 = 300%.

Front

What does it mean if a number is 100% of another number?

Back

If a number is 100% of another number, it means it is equal to that number.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 75% = 0.75.

Front

What is the relationship between fractions and percentages?

Back

Fractions can be converted to percentages by multiplying by 100. For example, 1/4 = 0.25 = 25%.

Front

What is the percent increase formula?

Back

The percent increase formula is: ((New Value - Old Value) / Old Value) * 100.

Front

What is the percent decrease formula?

Back

The percent decrease formula is: ((Old Value - New Value) / Old Value) * 100.

Front

How do you find the whole if you know the part and the percent?

Back

Use the formula: Whole = Part / (Percent/100). For example, if 30 is 60%, then Whole = 30 / (60/100) = 50.