Percent Proportions

Front

What is a percent proportion?

Back

A percent proportion is a way to express a part of a whole as a percentage. It is often written as \( \frac{part}{whole} = \frac{percent}{100} \).

Front

How do you calculate 15% of a number?

Back

To calculate 15% of a number, multiply the number by 0.15 (or \( \frac{15}{100} \)). For example, 15% of 60 is \( 60 \times 0.15 = 9 \).

Front

If Olivia has 60 marbles and gives away 15%, how many does she keep?

Back

Olivia gives away \( 60 \times 0.15 = 9 \) marbles. She keeps \( 60 - 9 = 51 \) marbles.

Front

What is the formula to find what percent one number is of another?

Back

The formula is \( \frac{part}{whole} \times 100 = percent \).

Front

How do you set up a proportion to find 'x' in the equation '5 is 10% of what number'?

Back

Set up the proportion as \( \frac{5}{100} = \frac{10}{x} \).

Front

What is the equation to find what percent 5 is of 50?

Back

The equation is \( \frac{5}{50} \times 100 = x \).

Front

If Aiden gives away 20% of 80 candy canes, how many does he give away?

Back

Aiden gives away \( 80 \times 0.20 = 16 \) candy canes.

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, \( \frac{18}{25} \times 100 = 72\% \).

Front

What is the percent of 18 out of 25 questions completed?

Back

The percent is \( \frac{18}{25} \times 100 = 72\% \).

Front

What does it mean if a number is 10% of another number?

Back

It means that the first number is one-tenth of the second number.