How do you convert 0.40 (40 repeating) to a fraction? Prealgebra Fractions Equivalent Fractions and Simplifying 1 Answer Shwetank Mauria Jun 6, 2016 0.4040404040........=40/99 Explanation: Let x=0.4040404040........, hence 100x=40.4040404040........ Subtracting first from second 99x=40 Hence x=40/99 Answer link Related questions What is 0.098 divided by 7? How do you find the fraction notation and simplify 16.6%? How do you convert 0.bar(45) (meaning the 45 is being repeated) to a fraction? How do you convert 8/15 to a decimal? How do you express 3/4, 7/16, and 5/8 with the LCD? How do you simplify fractions? What is the simplified form of 30/42? How do you subtract and simplify 9-5 1/3? How do you add and simplify 5/7 + 3/4? What is 0.17 in fraction form, simplified? See all questions in Equivalent Fractions and Simplifying Impact of this question 9808 views around the world You can reuse this answer Creative Commons License