In grade school, you were probably constantly drilled on mathematics. Whether it be multiplication tables, simple addition, or complicated division, it was taught over and over again that quick math ...
Researchers at Rochester Institute of Technology have developed MathDeck, an online search interface that allows anyone to easily create, edit and lookup sophisticated math formulas on the computer.
This leaflet gives tables, formulae and rules for users of the CURTA calculating machine. Received with CURTA calculator 1982.0922.01. overall: .3 cm x 7.7 cm x 15.1 cm; 1/8 in x 3 1/32 in x 5 15/16 ...
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