Percent Proportion

Front

What is percent proportion?

Back

Percent proportion is a way to express a ratio in terms of 100. It is used to compare a part to a whole and is often written as part/whole = percent/100.

Front

How do you calculate the percent grade?

Back

To calculate the percent grade, divide the number of correct answers by the total number of questions and multiply by 100. Formula: (correct answers / total questions) x 100.

Front

What is 20% of a number?

Back

To find 20% of a number, multiply the number by 0.20 (or divide by 5). For example, 20% of 100 is 100 x 0.20 = 20.

Front

How do you find the total amount when given a percent?

Back

To find the total amount when given a percent, divide the part by the percent (in decimal form). For example, if 20 is 20% of a number, the total is 20 / 0.20 = 100.

Front

What is the formula for calculating a tip?

Back

The formula for calculating a tip is: Tip = Total Bill x Tip Percentage. For example, if the bill is $85 and the tip is 20%, then Tip = 85 x 0.20 = $17.

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% as a decimal is 25 / 100 = 0.25.

Front

What is the relationship between fractions and percentages?

Back

Fractions and percentages are two ways to express the same concept. A percentage is a fraction with a denominator of 100. For example, 50% is equivalent to 1/2.

Front

How do you find the percent of a total?

Back

To find the percent of a total, divide the part by the total and multiply by 100. Formula: (part / total) x 100.

Front

What is 12% of 75?

Back

To find 12% of 75, multiply 75 by 0.12. So, 75 x 0.12 = 9.

Front

How do you calculate the percent increase?

Back

To calculate the percent increase, subtract the original value from the new value, divide by the original value, and multiply by 100. Formula: ((new value - original value) / original value) x 100.