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一、口算在小学数学教学中的地位口算就是通常所说的心算,它是笔算的基础.从初等数学中的数的四则运算到高等数学中的微积分运算都需要进行口算,而口算的最基本的内容就是小学教材中的“20以内的加减法”和“表内乘除法”等.基本口算的熟练程度决定着笔算计算能力的高低.基本口算越熟练,笔算速度就越快,准确率也越高,反之,基本口算不熟练,笔算速度就慢,也容易出错.例如:对一道三位数乘三位数的笔算题,要经过9次乘法口算和11次加法口算,只要其中有一次口算出现错误,
First, the math position in primary school mathematics teaching Mouth arithmetic is what is commonly referred to as mental arithmetic, it is the basis of the pen calculation from elementary mathematics to the mathematics of the four arithmetic operations require calculus, The basic content is the primary school textbooks in the “addition and subtraction within 20” and “table multiply and divide” and so on.According to the proficiency of the basic arithmetic calculation determines the level of computational ability.First, the more basic proficiency calculation, pen calculation faster, accurate For example, for a three-digit by three-digit pen-and-penicture, after nine multiplication and eleven additions, as long as the calculation is not proficient, the calculation speed is slow and error- There was a mistake in my mouth calculation