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 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 30% of 200, calculate 200 x 0.30 = 60.

Front

What is the formula for calculating simple interest?

Back

The formula for calculating simple interest is: Interest = Principal x Rate x Time.

Front

If 40% of 200 children are boys, how many are girls?

Back

80 girls attended the school play (200 - 80 = 120).

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.

Front

What does it mean to find a discount percentage?

Back

Finding a discount percentage means calculating how much less a product costs after applying a percentage reduction from its original price.

Front

If a baseball cap costs $30 and is on sale for 30% off, how much do you pay?

Back

You pay $21.00 after the discount.

Front

What is the relationship between percent, fraction, and decimal?

Back

A percent can be converted to a fraction by dividing by 100 and to a decimal by dividing by 100 as well.

Front

How do you find 30% of $20?

Back

30% of $20 is $6.00 (20 x 0.30 = 6).

Front

What is the total amount to be repaid if you borrow $3,000 at 4% interest for 4 years?

Back

The total amount to be repaid is $3,480.