0.4 as a fraction in its simplest form is 2/5
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0.0004 = .04%
If you mean .04, it is 4/100, or 2/50 or 1/25. if you mean 4, it is 4/1
Expressed as a percentage, 0.04 is equal to 4 percent.
Think of it this way. Any number as a percent, move the decimal point back two spaces and take away the percent. So, 4% would be .04 as a decimal, get it? Now, put 4 over 100 as a fraction and reduce. You will end up 2 over 50 as a fraction. Reduce again and you get the final fraction of 1 over 25.
4%, because .04 is 4 hundredths, and one % is = to one hundredth.To convert 0.04 to percent multiply by 100: 0.04 × 100 = 4 %