0.0003 as a Fraction
Writing 0.0003 as a fraction requires us to multiply 0.0003/1 by 10000/10000 which will result in 3/10000 - the final answer, since this fraction cannot be reduced.

What Is 0.0003 as a Fraction?
0.0003 as a fraction in lowest terms is 3/10000. Quick tip: to verify the answer is correct, use a calculator to divide 3 by 10000 and you should get 0.0003.
How to Work Out 0.0003 as a Fraction
The simple steps below will help you convert a decimal into a fraction. In this example we’ll demonstrate how to write .0003 as a simplified fraction:
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Turn 0.0003 into a fraction dividing it by 1.
0.0003 1
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To get rid of the decimal point, multiply the numerator and denominator by 10000. Why 10000? 0.0003 has four digits after the decimal point, so you need to multiply by 1 followed by 4 zeros (10000).
0.0003 1×10000 10000=3 10000
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Because this fraction cannot be reduced any further, 0.0003 as a fraction in simplest form is:
3 10000