AI generatedNumberKS3 / GCSE

Finding the fraction remaining

One whole is 1, or a fraction whose numerator equals its denominator.

  • One whole is 1, or a fraction whose numerator equals its denominator.
  • Add the fractions used when each refers to the original whole. Subtract that total from 1.
  • If a later fraction refers to what is left, it is a successive-fractions problem instead.

Example 1

of a tank is full of water. What fraction is empty?

The whole tank represents 1.

Example 2

of a tank is full of water. What fraction is empty?

The whole tank represents 1.

Remember
Use the worked steps to check your method, not just the final answer.

Your turn

Question 1

of a tank is full of water. What fraction is empty?

Check answer
The whole tank represents 1.
Question 2

of a tank is full of water. What fraction is empty?

Check answer
The whole tank represents 1.
Question 3

of a tank is full of water. What fraction is empty?

Check answer
The whole tank represents 1.
Question 4

of a tank is full of water. What fraction is empty?

Check answer
The whole tank represents 1.
Question 5

of a tank is full of water. What fraction is empty?

Check answer
The whole tank represents 1.
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