When I use Fahrenheit numbers, my daughter reminds me that it means nothing to her, so I always have to translate. I am somewhat bilingual
Last weekend a friend was asking if I had a formula. I do 
is it F = C x 1.8 + 32? (or 9/5 in place of 1.8, but ain't nobody got time for fractions?
i really hope it's something similar, because that's what i taught my kids.
*hopes a math genius won't point out decimals are fractions, too. and percents.*