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2.25x4.8+77.5x0.48简便计算

2.25x4.8+77.5x0.48 =2.25*0.48*10+77.5*0.48 =0.48*(22.5+77.5) =0.48*100 =48

2.25x4.8+77.5x0.48=2.25x4.8+7.75x4.8=(2.25+7.75)x4.8 =10x4.8=48

=4.8*(2.25+7.75)=4.8*10=48

2.25*4.8+77.5*0.48=2.25*4.8+7.75*4.8=(2.25+7.75)*4.8=10*4.8=48

原式=2.25*4.8+7.75*4.8=(7.75+2.25)*4.8=10*4.8=48

2.25x4.8+77.5x0.48=2.25x4.8+7.75x4.8=4.8*(2.25+7.75)=4.8*10=48

2.25乘4.8加77.5乘0.48=2.25*4.8+7.75*4.8=(2.25+7.75)*4.8=48

2.25*4.8+7.75*4.8(互相乘的两个数数位可以换)=(2.25+7.75)*4.8=1*4.8=4.8答题实属不易,请楼主谅解,求采纳~

(1)2.25*4.8+77.5*0.48,=2.25*4.8+7.75*4.8,=(2.25+7.75)*4.8,=10*4.8,=48;(2)6.68-3.25-1.75,=6.68-(3.25+1.75),=6.68-5,=1.68.

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