Percent Proportion

Front

What is the definition of percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

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

Back

Whole (w) = Part (p) / Percent (p) as a decimal.

Front

If 18 is 20% of a number, how do you find that number?

Back

Use the formula: Whole (w) = Part (p) / Percent (p) as a decimal. Here, w = 18 / 0.20 = 90.

Front

What is the relationship between fractions, decimals, and percents?

Back

They are different ways to represent the same value. For example, 1/4 = 0.25 = 25%.

Front

How do you convert a fraction to a percent?

Back

Multiply the fraction by 100 and add a percent sign. For example, 1/4 * 100 = 25%.

Front

What is the formula to calculate the percent of a number?

Back

Percent = (Part / Whole) * 100.

Front

If Phil missed 11 questions on an 88 question test, how do you calculate his grade?

Back

Grade = ((Total Questions - Missed Questions) / Total Questions) * 100 = (77/88) * 100 = 87.5%.

Front

What does it mean when we say '34% of what number is 51'?

Back

It means we need to find a number (Whole) such that 34% of it equals 51.

Front

How do you estimate the percent of a colored area in a circle?

Back

Estimate by comparing the colored area to the total area of the circle and converting that ratio to a percent.

Front

What is the decimal equivalent of 12.5%?

Back

0.125.