Percent Proportions

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 '%'.

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 x 0.20 = 10.

Front

What does it mean when we say 'X is Y% of Z'?

Back

It means that X is Y parts out of 100 parts of Z. To find Z, you can rearrange the formula: Z = X / (Y/100).

Front

What is the formula to calculate the percentage?

Back

The formula to calculate the percentage is: (Part/Whole) x 100.

Front

If 12 is 90% of what number, how do you find that number?

Back

To find that number, use the formula: Number = Part / (Percentage/100). So, Number = 12 / (90/100) = 13.3.

Front

What is 15% of 82?

Back

15% of 82 is calculated as: 82 x 0.15 = 12.3.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 25% becomes 0.25.

Front

What is 90% of 250?

Back

90% of 250 is calculated as: 250 x 0.90 = 225.

Front

If 34% of a number is 51, how do you find that number?

Back

To find that number, use the formula: Number = Part / (Percentage/100). So, Number = 51 / (34/100) = 150.

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%.