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估算是一种数学素养,但在估算教学中,存在着许多误区。本文从认识估算的价值、掌握估算的方法、科学地评价估算三个方面对估算作了论述。
Estimation is a mathematical accomplishment, but there are many errors in the estimation teaching. This article discusses the estimation from three aspects: the value of estimation, the method of estimating and the evaluation of estimation scientifically.