Question

这两道题简算，急求，谢谢！！

Answer 1

[（1.5+8/3）÷3.75-40%]÷80/9
=[25/6÷15/4-2/5]×9/80
=[10/9-2/5]×9/80
=10/9×9/80-2/5×9/80
=1/8-9/200
=0.08

2015×96.25+201又2分之1×26又4分之1+225×10又40分之3
=2015×96.25+201.5×26.25+225×10.075
=2015×96.25+2015×2.625+112.5×20.15
=2015×96.25+2015×2.625+1.125×2015
=2015×（96.25+2.625+1.125）
=2015×100
=201500

Answer 2

解：〔(1.5＋8/3)÷3.75－40％〕÷80/9
＝〔(3/2＋8/3)÷15/4－2/5〕÷80/9
＝(3/2÷15/4＋8/3÷15/4－2/5)÷80/9
＝(3/2×4/15＋8/3×4/15－2/5)×9/80
＝(2/5＋32/45－2/5)×9/80
＝32/45×9/80
＝2/25

追问

那个，可以帮我另解一道题吗

求你了

追答

解：原式＝2015×96.25＋201.5×26.25＋225×10.075
＝2015×96.25＋2015×2.625＋225×10.075
＝2015×(96.25＋2.625)＋225÷2×2×10.075
＝2015×98.875＋112.5×20.15
＝2015×98.875＋2015×1.125
＝2015×(98.875＋1.125)
＝2015×100
＝201500

Answer 3

上式=[（3/2+8/3）*4/15-2/5]*9/80
=(2/5+32/45-2/5)*9/80
=32/45*9/80
=2/25

追问

下面一个

Answer 4