It is asking you to convert the mixed number three and one-fifth into an improper fraction.
Let's practise
Write 3
as an improper fraction.
- Read the question and then read it again. What is it asking you to do?
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- What denominator will the improper fraction need?
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The denominator in is 5.
- Convert the whole number 3 into an improper fraction. Remember, each whole number will have five-fifths, so three whole numbers will have 3 × 5 fifths.
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3 × 5 fifths = 15 fifths
because 
× 3 = 
- Don't forget to add the extra .
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+ = 
- What is your answer? Check your working.
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It is correct because = + + + , which is 3 wholes and more.