Finding Percents Review

Front

What is a percent?

Back

A percent is a way to express 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 convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and then multiply by 100. For example, 3/4 = (3 ÷ 4) × 100 = 75%.

Front

What is 3/100 as a percent?

Back

3%

Front

How do you find the percent of a number?

Back

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

Front

What percent of the grid is shaded in if 34 out of 100 squares are shaded?

Back

34%

Front

A hockey player scored 40% of the 20 shots she took. How many shots did she score?

Back

8

Front

If 30% of students in a cafeteria ate an apple and 21 students ate an apple, how many students were in total?

Back

70

Front

What is 15% of 60?

Back

9

Front

How do you express a number as a percent of another number?

Back

To express a number as a percent of another number, divide the first number by the second number and multiply by 100. For example, to find what percent 25 is of 200, calculate (25 ÷ 200) × 100 = 12.5%.

Front

What is the formula to calculate percent change?

Back

Percent change = ((New Value - Old Value) ÷ Old Value) × 100.