.4
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0.4
two fifths written as a decimal = 0.42/5:= 2 ÷ 5= 0.4 in decimal
2/5 = 0.4
2/5 = 0.4
This number is already expressed in decimal notation. Expressed as a mixed number in its simplest form, it is equal to 57 2/25 or fifty-seven and two twenty-fifths.