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0.175÷0.25÷0.4怎样简便

=0.175÷(0.25×0.4) =0.175÷0.1 =1.75

原式=0.175×4÷1/4 =0.7×4 =2.8

0.175÷0.25÷0.4 =0.175÷(0.25x0.4) =0.175÷(0.1) =1.75

解: 0.175÷0.25x4 =0.175x4x4 =0.7x4 =2.8 0.175÷0.25x4=2.8

0.175÷0.25+0.4÷1.2 =7/10+1/3 =31/30

4.95÷0.4÷0.25 =4.95÷(0.4×0.25) =4.95÷0.1 =49.5

2.8

=0.25➗0.25x0.4x0.4 =0.4x0.4 =0.16

21.6-2.16÷0.25÷0.4的简便 21.6-2.16÷0.25÷0.4 =21.6-2.16/(0.25*0.4) =21.6-21.6=0

=2.78÷1/4×2/5 =2.78×4×2/5 =2.78×8/5 =4.448

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