It is asking you to turn two-fifths into a decimal.
Let's practise
Write the decimal equivalent of 
- Read the question and then read it again. What is it asking you to do?
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- Remember the line in a fraction is a dividing line, so also means 2 ÷ 5.
OR
Decimal fractions are expressed in tenths and hundredths.
Write equivalent fractions with either 10 or 100 as the denominator.
Then change the fraction to a decimal using place value to help you.
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= 
4 ÷ 10 = 0.4
- What is your answer? Check your working.
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= 0.4