小数除法表达式
首先我们用数字来代表一个小数除法更容易理解,我写出78÷0.3代替。
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小数除法运算法则
要知道小数除法的运算法则,先将除数变为整数,同时扩大10倍,变为780÷3来计算。
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列竖式
将这个除法用竖式的形式表示出来,被除数在里面,除数在外面。
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对齐数位
先用百位上的7去除3,得到的商写在百位的上面,对齐数位。
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继续计算
然后将十分上的8拉下来,18÷3,得到的数写在十位上。
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个位的零
已经没有余数了,我们不能忘记各位还有一个零,所以将零写在商的个位上。
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