.51 as a Fraction
To convert .51 to a fraction you need to multiply 0.51/1 by 100/100 which equals 51/100. This is the final result, since this fraction cannot be reduced.
 
What Is .51 as a Fraction?
.51 as a fraction in simplest form is 51/100. You can verify this answer by using a calculator to divide 51 by 100 and the result should be 0.51.
How to Convert .51 to a Fraction
Here are the steps to convert a decimal to a fraction, more specifically how to get .51 as a simplified fraction:
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    Rewrite 0.51 as a fraction dividing it by 1.
    0.51 1
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    Multiply the numerator and denominator by 100. Because .51 has two digits after the decimal point, you need to multiply by 102=100 to get rid of the decimal places.
    0.51 1×100 100=51 100
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    Since the resulting fraction cannot be reduced any further, .51 as a fraction in simplest form is:
    51 100