3 ms·
Yes, but even better would be: fahrenheit to celcius: ((F-32)/2)+10% So: 100F = 100-32=68/2=34+3.4=37.4 (actual 37.7) 32F = 0/2=0 50F = 50-32=18/2=9+10%=9.9 (
by moi2388 2y ago
Yes, but even better would be:
fahrenheit to celcius:
((F-32)/2)+10%
So:
100F = 100-32=68/2=34+3.4=37.4 (actual 37.7)
32F = 0/2=0
50F = 50-32=18/2=9+10%=9.9 (actual 10)
I prefer this heuristic, since after taking the 32 difference, it’s just halving and adding 10%, which is very easily and quickly done mentally (as compared to (5/9)