Review #3 Percent of a number

Front

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

Back

Percent = (Part / Whole) × 100

Front

If Gary read 34 pages of a 340-page book, how do you find the percent he read?

Back

Percent read = (34 / 340) × 100 = 10%.

Front

Joey has 3 out of 20 coins. How do you calculate the percent of coins he has?

Back

Percent = (3 / 20) × 100 = 15%.

Front

What is 90% of 250?

Back

90% of 250 = 0.90 × 250 = 225.

Front

How do you find 20% of a number?

Back

20% of a number = 0.20 × number.

Front

What is 20% of 65?

Back

20% of 65 = 0.20 × 65 = 13.

Front

If 15 out of 25 boys chose to go swimming, how do you find the percent?

Back

Percent = (15 / 25) × 100 = 60%.

Front

What does 'percent' mean?

Back

Percent means 'per hundred' and is a way to express a number as a fraction of 100.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number by the bottom number and multiply by 100.

Front

What is the percent equivalent of 1/4?

Back

1/4 = 0.25 × 100 = 25%.