Some readers may solve the problem procedurally: line up the two numbers, add the ones column, carry the one, and add the tens to get 43. Others might instead notice a creative shortcut: 29 + 14 is ...
“Laziness is our saving grace,” writes mathematician Du Sautoy (The Creativity Code) in this accessible look at thousands of years of mathematical shortcuts. Focusing on 10 different shortcuts, Du ...
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