6th Grade: Percents

Front

What is a percent?

Back

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

Front

How do you calculate a percent of a number?

Back

To calculate a 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 to find the original price after a discount?

Back

Original Price = Sale Price / (1 - Discount Rate). For example, if a ticket costs $6.65 after a 20% discount, the original price is $6.65 / (1 - 0.20) = $8.31.

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 a percent sign. For example, 0.56 * 100 = 56%.

Front

What is the percent decrease formula?

Back

Percent Decrease = ((Original Price - Sale Price) / Original Price) * 100. For example, if a scooter's original price is $65.50 and the sale price is $52.40, the percent decrease is (($65.50 - $52.40) / $65.50) * 100 = 20%.

Front

What is 43% of 84?

Back

43% of 84 is 36.12.

Front

How do you round a decimal to the nearest hundredth?

Back

To round a decimal to the nearest hundredth, look at the third decimal place. If it's 5 or more, round up the second decimal place by one. If it's less than 5, keep the second decimal place the same.

Front

What is 0.62389023840220984 written as a percent (rounded to the nearest hundredth)?

Back

0.62389023840220984 as a percent (rounded to the nearest hundredth) is 62%.

Front

What does a 20% discount mean?

Back

A 20% discount means that the price is reduced by 20% of the original price. For example, if an item costs $100, a 20% discount means you save $20.

Front

How do you find the sale price after a discount?

Back

Sale Price = Original Price - (Original Price * Discount Rate). For example, if an item costs $50 and has a 10% discount, the sale price is $50 - ($50 * 0.10) = $45.