6 ms·
And -40 is -40.
by flavor8 12y ago
And -40 is -40.
- bsder 12y agoThe most important and useful as it makes C-to-F conversions much easier. add 40--convert (9/5 or 5/9) -- subtract 40 or, as I tend to use, add 40--convert (2 or 1/2) -- subtract 40.
- dasil003 12y agoHow does that crude approximation make it any easier? I am pretty fluent in conversion just by remembering that 10 Celsius degrees are equivalent to 18 Fahrenheit degrees, then practicing counting by 10s: -4°F, 14°F, 32°F, 50°F, 68°F, 86°F, 104°F Once you have those under your belt you can figure most earthly air temperatures pretty quickly and exactly.