4.78×0.25+0.75的简便算法要过程

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4.78×0.25+0.75的简便算法要过程4.78×0.25+0.75的简便算法要过程4.78×0.25+0.75的简便算法要过程4.78×0.25+0.75=4.78×0.25+3×0.25=(4

4.78×0.25+0.75的简便算法要过程
4.78×0.25+0.75的简便算法
要过程

4.78×0.25+0.75的简便算法要过程
4.78×0.25+0.75=4.78×0.25+3×0.25=(4.78+3)×0.25=1.945

4.78×0.25+0.75
=4.78×0.25-0.25+1
=0.25×(4.78-1)+1
=0.25×3.78+1
=0.945+1
=1.945.