3.1-3.2 Flashcard: 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 20% of 50, calculate 50 * 0.20 = 10.

Front

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

Back

The formula is: Total = Part / (Percent / 100). For example, if 25 is 20% of a total, then Total = 25 / (20 / 100) = 125.

Front

What is 15% of 60?

Back

9

Front

What is 56% of 475?

Back

266

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 percent of 40 is 34?

Back

85%.

Front

What is the relationship between percent, fraction, and decimal?

Back

Percent is a fraction with a denominator of 100. To convert a percent to a decimal, divide by 100. To convert a decimal to a percent, multiply by 100.

Front

What is 2% of 250?

Back

5

Front

If 104 is 32% of a number, how do you find that number?

Back

Use the formula: Number = 104 / (32 / 100) = 325.