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- Wed Sep 12, 2018 10:47 am UTC
- Forum: School
- Topic: Math without calculators
- Replies: 34
- Views: 43331
Before calculators and cheap computers, we had three real alternatives: Do it the hard way - “long” multiplication, long-division. Use a slide-rule. This gave a very quick (faster than a calculator!) answer but is very approximate and can only multiply and divide. Use tables of logarithms, sines, co...