Percents!

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 numerator by the denominator and then multiply by 100. For example, 2/5 = (2 ÷ 5) × 100 = 40%.

Front

What is 50% of a number?

Back

50% of a number is half of that number. For example, 50% of $148 is $74.

Front

How do you find the percent of a shaded area in a model?

Back

To find the percent of a shaded area, divide the area of the shaded part by the total area and multiply by 100. For example, if 64 out of 100 squares are shaded, the percent shaded is (64 ÷ 100) × 100 = 64%.

Front

What fraction is equivalent to 25%?

Back

25% is equivalent to the fraction 1/4.

Front

How do you calculate the grade percentage?

Back

To calculate the grade percentage, divide the number of correct answers by the total number of questions and multiply by 100. For example, if James got 15 out of 20 questions right, his grade percentage is (15 ÷ 20) × 100 = 75%.

Front

What is the formula to calculate percent change?

Back

The formula for percent change is: ((New Value - Old Value) ÷ Old Value) × 100.

Front

How do you express a percent as a decimal?

Back

To express a percent as a decimal, divide the percent by 100. For example, 40% as a decimal is 40 ÷ 100 = 0.40.

Front

What is 10% of a number?

Back

10% of a number is one-tenth of that number. For example, 10% of $200 is $20.

Front

How do you find the total amount if you know the percent of it?

Back

To find the total amount, divide the known amount by the percent (in decimal form). For example, if 40% of a number is $80, the total amount is $80 ÷ 0.40 = $200.