PERCENTS

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 convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add the percent symbol. For example, 0.81 becomes 0.81 x 100 = 81%.

Front

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

Back

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

Front

If 18 is what percent of 36, how do you find the percent?

Back

Use the formula: Percent = (Part / Whole) x 100. Here, Part = 18 and Whole = 36. So, Percent = (18 / 36) x 100 = 50%.

Front

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

Back

The equation is: Whole = Part / (Percent / 100). For example, if Part = 50 and Percent = 15%, then Whole = 50 / (15 / 100) = 333.33.

Front

How do you calculate a tip as a percent of a bill?

Back

To calculate a tip, multiply the total bill by the tip percentage (as a decimal). For example, for a $28 bill and a 20% tip: Tip = 28 x 0.20 = $5.60.

Front

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

Back

The relationship is defined by the formula: Part = (Percent / 100) x Whole.

Front

How do you find the percent grade from points earned and total points?

Back

Use the formula: Percent Grade = (Points Earned / Total Points) x 100. For example, if 60 points were earned out of 75, Percent Grade = (60 / 75) x 100 = 80%.

Front

What does it mean if a number is 15% of another number?

Back

It means that the first number is 15 out of every 100 parts of the second number. For example, if 15% of 200 is 30, then 30 is 15% of 200.

Front

How do you express 20% as a decimal?

Back

To express 20% as a decimal, divide by 100. So, 20% = 20 / 100 = 0.20.