Percent Proportions Review #1

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

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you find the whole when given a part and a percent?

Back

Use the formula: Whole = Part / (Percent / 100).

Front

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

Back

Use the formula: Percent = (Part / Whole) x 100.

Front

What is 20% of 50?

Back

10

Front

If 30% of a number is 15, what is the number?

Back

50 (Number = 15 / 0.30).

Front

What is 40% of 230?

Back

92

Front

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

Back

450 (Number = 78 / 0.17).

Front

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

Back

Part is the portion of the whole, and percent is the part expressed as a fraction of the whole.

Front

How do you convert a fraction to a percent?

Back

Multiply the fraction by 100 and add a percent sign.