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 the profit earned from a selling price?

Back

To calculate profit, multiply the selling price by the profit percentage (as a decimal). Profit = Selling Price x Profit Percentage.

Front

If a car is sold for $7800 with a profit of 12%, how do you find the profit amount?

Back

Multiply $7800 by 0.12 (12% as a decimal) to find the profit: $7800 x 0.12 = $936.

Front

What is 75% of a number?

Back

To find 75% of a number, multiply the number by 0.75.

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.

Front

What is the formula to find the total number of students if you know the number of boys and the percentage of boys?

Back

Total Students = Number of Boys / (Percentage of Boys / 100).

Front

If 50% of students in a class are boys and there are 15 boys, how do you find the total number of students?

Back

Total Students = 15 / 0.5 = 30.

Front

What does it mean if a value increases by a certain percent?

Back

An increase by a certain percent means the original value is multiplied by (1 + the percent as a decimal).

Front

How do you find the percentage increase from an original value to a new value?

Back

Percentage Increase = ((New Value - Original Value) / Original Value) x 100.

Front

What is the relationship between percentages, fractions, and decimals?

Back

Percentages can be converted to fractions by dividing by 100 and to decimals by dividing by 100 as well.