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简便计算表现为能灵活运用熟悉的加法交换律、加法结合律、乘法交换律、乘法结合律以及乘法分配律等计算规律简便快捷地解决计算问题。简便运算和估算的教学具有某些相似之处:简便计算和估算都很注重意识的培养,都是帮助我们用简便、快捷的方法解决问题。不同之处:得到的答案是准确数和近似数,而估算要根据具体情境,采用具体的估算方法。简便运算没有固定的算法,有时还会出现算法多样化,我们往往要选择最优化的解题方法。也可以说,用简便方法计算是要我们
The simple calculation shows that the calculation problem can be solved simply and quickly by using the familiar addition law, additive law, multiplication law, multiplication law and multiplication law. There are some similarities between teaching simple calculations and estimating: Simple calculations and estimations that focus on awareness are all about helping us solve problems in a quick and easy way. The difference: the answer is accurate number and approximate number, and estimates according to the specific situation, using a specific method of estimation. Simple calculation There is no fixed algorithm, and sometimes the algorithm also appears diversified, we often have to choose the most optimal solution to the problem. It can also be said that using simple methods to calculate is to us