Percent Proportions

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 '%'.

Front

How do you calculate the percent of a part compared to a whole?

Back

To calculate the percent, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

What is the percent of 6 out of 16?

Back

37.5% (calculated as (6/16) x 100).

Front

If 20% of a group like a certain snack and 60 students like it, how do you find the total number surveyed?

Back

Divide the number of students who like the snack by the percent in decimal form: 60 / 0.20 = 300.

Front

What is 18 percent of 36?

Back

6.48 (calculated as 0.18 x 36).

Front

How do you calculate tax on a purchase?

Back

To calculate tax, multiply the purchase price by the tax rate (in decimal form). For example, for $80 with a 10% tax: 80 x 0.10 = 8.

Front

What is the total cost after tax if an item costs $80 and the tax is 10%?

Back

$88 (calculated as $80 + $8 tax).

Front

If a group starts with 150 people and loses 60% due to illness, how do you find the remaining number?

Back

Calculate the number lost: 150 x 0.60 = 90. Then subtract from the total: 150 - 90 = 60.

Front

What does it mean to find a percentage of a number?

Back

Finding a percentage of a number means calculating how much that percentage represents in terms of the number.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 20% becomes 0.20.