Write the 2/5 as a Decimal
In order to change 2/5 to decimal form we need to divide 2 by 5. We know that since 2 is smaller than 5 we are going to end up with a number less than 1.
We can divide 2/5 with a calculator or do it longhand. In this video I did the division longhand (but checked my answer with a calculator). When we divide 2 by 5, we get 0.4.
So: 2/5 = 0.4
0.4 is less than 1 so that is a good way to check if our answer is reasonable.
Note that 2/5 and 0.4 represent the same quantity, they are just written in different formats. 2/5 is a fraction and 0.4 is in decimal form.
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