Percent Proportion

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 '%'. For example, 50% means 50 out of 100.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form). For example, to find 20% of 50, calculate 50 * 0.20 = 10.

Front

What is the formula for percent proportion?

Back

The formula for percent proportion is: (part/whole) = (percent/100). This can be rearranged to find any of the three values.

Front

If 15 out of 25 boys chose to go swimming, how do you find the percent?

Back

To find the percent, divide the part (15) by the whole (25) and multiply by 100: (15/25) * 100 = 60%.

Front

What does it mean when we say '26 is 5% of what number'?

Back

This means we need to find a number (let's call it x) such that 5% of x equals 26. The equation is: 0.05 * x = 26.

Front

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

Back

To find what percent one number (part) is of another number (whole), use the formula: (part/whole) * 100. For example, to find what percent 20 is of 50: (20/50) * 100 = 40%.

Front

If Brian ate 3 granola bars and that is 25% of the total, how do you find the total?

Back

To find the total, use the formula: total = part / (percent/100). Here, total = 3 / (25/100) = 12.

Front

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

Back

Percent, fraction, and decimal are different ways to represent the same value. For example, 50% = 50/100 = 0.50.

Front

How do you convert a percent to a decimal?

Back

To convert a percent to a decimal, divide by 100. For example, 75% = 75/100 = 0.75.

Front

What is the percent increase formula?

Back

The percent increase formula is: ((new value - old value) / old value) * 100.