Unit 6 Percents 2024

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 percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 50, calculate 50 x 0.20 = 10.

Front

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

Back

The formula is: Total = Part / (Percent in decimal form). For example, if 30 is 60% of a total, then Total = 30 / 0.60 = 50.

Front

If 25% of a class of 40 students are girls, how many girls are in the class?

Back

There are 10 girls in the class. (25% of 40 = 0.25 x 40 = 10).

Front

What does it mean if a store offers a 20% discount?

Back

It means that the price of an item is reduced by 20% of its original price.

Front

How do you find the discount amount on an item?

Back

To find the discount amount, multiply the original price by the discount percentage (in decimal form).

Front

If a shirt costs $50 and is on sale for 30% off, what is the sale price?

Back

The sale price is $35. (30% of $50 = $15; $50 - $15 = $35).

Front

What is the relationship between fractions and percents?

Back

Percents can be converted to fractions by placing the percent over 100 and simplifying. For example, 50% = 50/100 = 1/2.

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 = 0.25 x 100 = 25%.

Front

If 60% of a number is 30, what is the number?

Back

The number is 50. (30 / 0.60 = 50).