2.25X4.8+77.5X0.48怎么简算2.25X4.8+77.5X0.48

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2.25X4.8+77.5X0.48怎么简算2.25X4.8+77.5X0.48

2.25X4.8+77.5X0.48怎么简算2.25X4.8+77.5X0.48
2.25X4.8+77.5X0.48怎么简算
2.25X4.8+77.5X0.48

2.25X4.8+77.5X0.48怎么简算2.25X4.8+77.5X0.48
2.25*4.8+77.5*0.48=2.25*4.8+77.5*4.8*0.1
=4.8*(2.25+7.75)
=4.8*10
=48