John H.
On Mon, 8 Feb 2016 16:37:48 -0800 (PST), True North wrote:

- show quoted text -
"Most of the model airplanes in the magazines and catalogs give the wingspan in mms. For cms, convert
to mms, divide result by 100, then multiply result by 4. Mentally less cumbersome than dividing by
2.5, although converting 2.5 to a fraction, 5/2 and then multiplying by 2/5 is pretty easy."


So..since we always measure snow in centimeters...we divide our centimeters by 10 and then multiply by four to get your inches. That might be slightly quicker when dealing with odd numbers.