Percents, Percents, 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 calculate the percent of a part compared to a whole?

Back

To calculate the percent of a part compared to a whole, use the formula: (Part/Whole) x 100. For example, if you have 20 out of 50, the percent is (20/50) x 100 = 40%.

Front

What is the percent grade if a student scores 15 out of 20 on a test?

Back

The percent grade is (15/20) x 100 = 75%.

Front

If a garden has 30 flowers, and 10 of them are roses, what percent of the flowers are roses?

Back

The percent of roses is (10/30) x 100 = 33.33%.

Front

What is the formula for percent change?

Back

The formula for percent change is: ((New Value - Old Value) / Old Value) x 100.

Front

If a shirt originally costs $40 and is now $30, what is the percent decrease in price?

Back

The percent decrease is ((40 - 30) / 40) x 100 = 25%.

Front

How do you find 20% of a number?

Back

To find 20% of a number, multiply the number by 0.20. For example, 20% of 50 is 50 x 0.20 = 10.

Front

What percent of 200 is 50?

Back

To find what percent 50 is of 200, use the formula: (50/200) x 100 = 25%.

Front

If 60% of a class of 30 students are girls, how many girls are in the class?

Back

To find the number of girls, calculate 60% of 30: 0.60 x 30 = 18 girls.

Front

What is the percent of a number that is equal to 1/4?

Back

1/4 is equal to 25%. (1/4) x 100 = 25%.