A fraction is a division problem. If you divide two by five, the answer is two fifths. In decimal form, this equals .4 (four tenths). You can do division problems either by hand, if you know the technique, or by means of a calculator, which is even easier.
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Yes, 2 fifths is half of 4 fifths.
Four-fifths. 2/5 + 2/5 = 4/5.
it is 2 and four fifths
One is five fifths. Five fifths and four fifths is nine fifths.
2 fifths = 2/5 = 4/10 = 0.4