Percent Proportion/Equation

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) x 100

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100.

Front

What is 10% of a number?

Back

10% of a number can be calculated by multiplying the number by 0.10.

Front

If 36% of 2400 calories came from fat, how do you calculate the calories from fat?

Back

Calories from fat = 2400 x 0.36 = 864 calories.

Front

How do you find the percentage of a group that meets a certain criterion?

Back

Percentage = (Number of favorable outcomes / Total number of outcomes) x 100.

Front

What is the percentage of empty seats if 225 out of 250 seats are sold?

Back

Percentage of empty seats = ((250 - 225) / 250) x 100 = 10%.

Front

How do you calculate the percent grade on a test?

Back

Percent grade = (Number of correct answers / Total number of questions) x 100.

Front

What is the relationship between fractions and percentages?

Back

A fraction can be converted to a percentage by multiplying by 100.

Front

How do you calculate the percentage increase or decrease?

Back

Percentage change = ((New Value - Old Value) / Old Value) x 100.

Front

What is the formula for finding a percentage of a total?

Back

Percentage of total = (Desired amount / Total amount) x 100.