- #1
PeteyCoco
- 38
- 1
I decided to try some of the problems in my Mechanics text without a calculator to see how well I could approximate the answers using differential equations and mental arithmetic. I was a bit slow, but I remembered some tricks I used as a kid in grade school that I hadn't used in ages. Does anyone have any tricks that they use for mental calculations? The most recent one I've learned was for cubing numbers near 50 which was from Surely You're Joking, Mr. Feynman
(I did a quick search of the forums and couldn't find a thread like this. If one exists I apologize)
(I did a quick search of the forums and couldn't find a thread like this. If one exists I apologize)