20.1*4.56-0.456怎么算

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20.1*4.56-0.456怎么算20.1*4.56-0.456怎么算20.1*4.56-0.456怎么算20.1*4.56-0.456=20.1*4.56-0.1x4.56=(20.1-0.1)x

20.1*4.56-0.456怎么算
20.1*4.56-0.456怎么算

20.1*4.56-0.456怎么算
20.1*4.56-0.456=20.1*4.56-0.1x4.56=(20.1-0.1)x4.56=20x4.56=91.2

20.1*4.56-0.456
=20.1*4.56-0.1*4.56
=(20.1-0.1)*4.56
=20*4.56
=91.2

20.1*4.56-4.56*0.1=(20.1-0.1)*4.56

20.1*4.56-0.456
=201*(0.456)-0.456
=(201-1)*(0.456)
=200*(0.456)
=91.2

原式=20.1*4.56*10-4.56*0.1
=4.56*(20.1-0.1)
=4.56*20
=91.2