Proportions and Percents

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you find a percent of a number?

Back

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

Front

What is the formula for calculating percent?

Back

Percent = (Part/Whole) x 100.

Front

If 14 sticks of pepperoni are needed for 28 pizzas, how many sticks are needed for 1 pizza?

Back

0.5 sticks.

Front

What is 30% of $20?

Back

$6.

Front

If 200 children attended a play and 40% were boys, how many boys attended?

Back

80 boys.

Front

What is 20% of 65?

Back

13.

Front

If a coat costs $76 and you have a 35% off coupon, how much do you save?

Back

$26.60.

Front

What is the final price of the coat after using the coupon?

Back

$49.40.

Front

How do you convert a fraction to a percent?

Back

Divide the numerator by the denominator and multiply by 100.