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Is this the best way to do quick arithmetic, or are there other ways?
by Numberwang 9y ago
Is this the best way to do quick arithmetic, or are there other ways?
- dahart 9y agoThere are lots of ways, depending on what you want to calculate. Here's a fantastic book on the subject: https://www.amazon.com/Dead-Reckoning-Calculating-Without-Instruments/dp/0884150879 https://www.amazon.com/Dead-Reckoning-Calculating-Without-In...