Question

75除以四加上零点二五乘以25的简便计算

Answer 1

75÷4+0.25×25
=75×0.25+0.25×25
=(75+25)×0.25
=100×0.25
=25

Answer 2

75×1.25+1.2×12.5+0.13×125
=（75+12+13）×1.25
=100×1.25
=125
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