It is asking you to find two-thirds of 18.
Let's practise
of 18 =
- Read the question and then read it again. What is it asking you to do?
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First, find 
of 18.
Remember that finding is the same as dividing by three.
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of 18 = 6, because 18 ÷ 3 = 6
- Now focus on the numerator, 2.
Multiply of 18 by 2 to find of 18.
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of 18 = 6
So, of 18 = 6 × 2 = 12
- What is your answer?
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of 18 = 12
- Check your answer using the inverse by ‘undoing’ all the steps you have done.
First, divide 12 by 2 to give the value of, and then multiply the answer by 3 to give the value of the whole.
You should return to the original number, 18.
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12 ÷ 2 = 6
6 × 3 = 18