Percent Problems (Lesson 8-3)

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 15% of 200, calculate 200 x 0.15 = 30.

Front

What is the formula to find the whole when given a part and a percent?

Back

The formula is: Whole = Part / (Percent / 100). For example, if 15 is 75% of a number, the whole is 15 / 0.75 = 20.

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

Front

What is the relationship between part, whole, and percent?

Back

The relationship is expressed as: Percent = (Part / Whole) x 100.

Front

If 15% of a number is 60, how do you find the number?

Back

You can find the number by using the formula: Number = 60 / 0.15 = 400.

Front

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

Back

It means that the number is whole and unchanged. For example, 100% of 50 is 50.

Front

How do you find what percent one number is of another?

Back

To find what percent one number is of another, use the formula: Percent = (Part / Whole) x 100. For example, to find what percent 225 is of 120, calculate (225 / 120) x 100 = 187.5%.

Front

What is a percent proportion?

Back

A percent proportion is a way to compare a part to a whole using a fraction. It is often set up as: part/whole = percent/100.

Front

If Madelyn made 45% of her 20 shots, how many did she make?

Back

To find out how many shots she made, calculate: 20 x 0.45 = 9.