能簡算就簡算2.25×3/5+2.75÷1又2/3+60%

能簡算就簡算2.25×3/5+2.75÷1又2/3+60%


2.25×3/5+2.75÷1又2/3+60%
=2.25×0.6+2.75×0.6+0.6
=0.6×(2.25+2.75+1)
=0.6×6
=3.6



3.25+6.75*3.2怎樣簡算


建議用分數作,後面的就很方便了.



簡算41.4/2.5+414/75-0.52/0.25


為簡化運算過程,把分母全部化為75
(這樣分子分母全部為整數,當然化為7.5或者其它數位也不是不可以)
原式=1242/75+414/75-156/75=(1242+414-156)/75=1500/75=20
【^_^真心求採納~~~】



225÷3.75÷3.75怎樣簡算


=(15×15)÷[(15×0.25)×(15×0.25)]
=(15×15)÷(15×15)÷(0.25×0.25)
=1÷(0.25×0.25)
=4×4÷(4×0.25×4×0.25)
=16÷1
=16