a 100 vs 100 - English Language Usage Stack Exchange The flow rate increases 100-fold (one hundred-fold) Would be a more idiomatic way of saying this, however, the questioner asks specifically about the original phrasing The above Ngram search would suggest that a one hundred has always been less frequently used in written language and as such should probably be avoided Your other suggestion of by one hundred times is definitely better than a
Is it proper to state percentages greater than 100%? [closed] People often say that percentages greater than 100 make no sense because you can't have more than all of something This is simply silly and mathematically ignorant A percentage is just a ratio between two numbers There are many situations where it is perfectly reasonable for the numerator of a fraction to be greater than the denominator
centennial vs. centurial - describing periods of 100 years relating to 100 years : marking or beginning a century, with the example "the centurial years 1600 and 1700" But there is a word that is widely used to indicate the range of years or centuries covered by an article or book: history
Is It Ok To Write 100% In A Formal Text? - English Language Usage . . . The statistical-sounding expression is no problem, but if you want to be formal in register, as your headline indicates, you should probably spell it out as “one hundred percent”—and also spell out “it is” (which latter you have here contracted)