計算:3又5分之3 × 42.3 × 3又4分之3 - 12又2分之1 × 0.423 × 28 = ?
(請各位q友幫幫忙,謝拉~~~)
計算:3又5分之3 × 42.3 × 3又4分之3 - 12又2分之1 × 0.423 × 28 = ?
(請各位q友幫幫忙,謝拉~~~)
解:原式=18/5×42.3×15/4-25/2×0.423×28
=18/5×15/4×(0.423×100)-25/2×28×0.423
=27/2×100×0.423-350×0.423
=1350×0.423-350×0.423
=(1350-350)×0.423
=1000×0.423
=423