Chapter 4: Fractions, decimals and percentages

Question 0

To convert a percentage to a decimal

Answer 0

Divide by 100%. Therefore, move the decimal point two places to the left

Question 1

To convert a percentage to a fraction

Answer 1

Change the % sign to a dominator of 100, simplify the fraction if possible

Question 2

To convert a fraction to a percentage

Answer 2

Multiply by 100%

Question 3

To convert a decimal to a percentage

Answer 3

Multiply by 100%. Therefore, move the decimal point two places to the right

Question 4

To express one quantity as a percentage of another

Answer 4

Write a fraction with the ‘part amount’ as the numerator and the ‘whole’ amount as the denominator. Then multiply it by 100%

Question 5

To find a percentage of a quantity

Answer 5

Express the required percentage as a fraction. Change the ‘of’ into a multiplication sign. Multiply it by the quantity.