Percent Problems - Find Whole, Part, or Percent

Front

What is a percent?

Back

A percent is a way to express a number as a fraction of 100. It is often used to compare ratios and express how much of something there is in relation to a whole.

Front

How do you calculate the discount amount?

Back

To calculate the discount amount, multiply the original price by the discount percentage (as a decimal). For example, for a $20 shirt with a 40% discount: $20 x 0.40 = $8 discount.

Front

What is the formula to find the percent of a part?

Back

The formula to find the percent of a part is: (Part / Whole) x 100 = Percent.

Front

If you have 3 out of 20 coins, how do you find the percent?

Back

To find the percent, use the formula: (3 / 20) x 100 = 15%.

Front

How do you calculate a grade percentage?

Back

To calculate a grade percentage, divide the points earned by the total possible points and multiply by 100. For example, if you earned 60 out of 75 points: (60 / 75) x 100 = 80%.

Front

What does it mean if 4% of students were absent?

Back

It means that 4 out of every 100 students were not present. To find the total enrollment, you can set up the equation: 0.04 x Total Enrollment = 13.

Front

How do you find the percentage of questions answered incorrectly?

Back

To find the percentage of questions answered incorrectly, divide the number of incorrect answers by the total number of questions and multiply by 100. For example, if 22 out of 40 questions were wrong: (22 / 40) x 100 = 55%.

Front

What is the relationship between part, whole, and percent?

Back

The part is the portion of the whole, and the percent is the part expressed as a fraction of the whole multiplied by 100.

Front

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

Back

The formula is: Whole = Part / (Percent / 100). For example, if the part is 13 and the percent is 4%, then: Whole = 13 / (0.04) = 325.

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) x 100 = 25%.