Question

61.25-(4.8-1.25)如何简算？

Answer 1

61.25-(4.8-1.25)简便运算：
61.25-(4.8-1.25)
=61.25+1.25-4.8
=62.5-4.8
=62.5-5+0.2
=57.5+0.2
=57.7

Answer 2

61.25-（4.8-1.25）
=61.25-4.8+1.25
=61.25+1.25-4.8
=62.5-4.8
=57.7

Answer 3

解：61.25-（4.8-1.25）

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=61.25+1.25-4.8

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=62.50-4.8

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=58.2

Answer 4

61.25－（4.8－1.25）=61.25－4.8+1.25=61.25+1.25－4.8=62.5－4.8=57.7

Answer 5

由于上式中只有减法一种预算，那么我们先找规律看是否有相同好算的。由于个位加小数部分的1.25有相同的，那么我们就可以先算，根据去括号的规定，我们把算式可以变换成61.25+1.25-4.8，那么就是变成带一位小数的计算，62.5-4.8=57.7