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When in doubt, add zero or multiply by one. (English)
Math. Comput. Educ. 50, No. 2, 106-108 (2016).
From the text: In this note we consider a classroom unit designed to show students that the technique of adding zero or multiplying by one using appropriate expressions can often be the best way of solving a given problem. In particular, such a technique should not be considered a “trick", but another useful tool.
Classification: H20 H30 I40 I50 F50
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