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1.算理、法则不清。小学生计算出错的原因,很大一部分是对算理、法则理解不透,掌握不牢所造成的,如4646÷46,有的学生会得11,这就是对“商的中间或末尾有0的除法”法则没有准确理解掌握。纠正这类错误的办法就是讲清算理、法则,强化理解记忆。2.运算顺序理解运用的错误。常出现计算错误的原因还有学生对运算顺序理解不正确,运用不灵活,如:25×8÷25×8,有的同学最后结果等于1,产生错误的原因:一是将混合运算法则中“先算乘
1 arithmetic, the law is unclear. Pupils calculate the reason for the error, a large part of the arithmetic, the law of impermement, the control is not strong, such as 4646 ÷ 46, some students will get 11, which is Division ”Law does not accurately understand and master. The way to correct such mistakes is to clarify the rules of calculation and strengthen the understanding of memory. 2. Operational sequence to understand the use of errors. There are often the reasons for the calculation error There are students understand the order of operations is not correct, the use of inflexible, such as: 25 × 8 ÷ 25 × 8, some students the final result is equal to 1, the error causes: First, the hybrid algorithm "Calculate first