123²-122乘124(简便运算)
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1.25乘3.4乘0.8简便运算如下:1.25×3.4×0.8=1.25×0.8×3.4=1×3.4=3.4再问:4乘1.83乘0.25简便运算再答:4乘1.83乘0.25简便运算如下:4×1.83×
34.5乘76.5减345乘6.42减123乘10.45=34.5乘76.5减34.5乘64.2减123乘10.45=34.5×(76.5-64.2)-123×10.45=34.5×12.3-12.3
0.36×(1.5×0.4)=0.36×0.6=0.216
0.125x8x4x25再答:等于1x100
12.3*84+123*1.6=12.3*84+12.3*10*1.6=12.3*(84+10*1.6)+12.3*100=1230
=1.25*8*1.7=10*1.7=17再问:2.5乘(0.4乘3)简便运算再答:=2.5*0.4*3=1*3=3再问:2.4乘2.5简便运算再答:=6*0.4*2.5=6*(0.4*2.5)=6*
126乘124分之37=(124+2)×(37/124)=124×(37/124)+2×(37/124)=37+(37/62)=37又62分之37
199x123+2x123-123=123x(199+2-1)=123x200=24600
(123乘322加333)分之(456加123乘321)=(123乘321+123加333)分之(456加123乘321)=(123乘321加456)分之(456加123乘321)=1
567*123.123-123*567.567=567*(123+0.123)-123*(567+0.567)=567*123+567*0.123-123*567-123*0.567=567*0.12
123123*321-321321*123=123*1001*321-321*1001*123=0
125乘(124分之123)=125乘(124分之124-1)=125乘(1-124分之1)=125-124分之125=126-124分之1
你好!123×456÷789÷456×789÷123=123÷123×456÷456×789÷789=1再问:太谢谢了再答:助人为乐
246*17-123*32=123*2*17-123*32=123*34-123*32=123*(34-32)=123*2=246
应该是34.5*76.5-34.5*64.2-123*1.45吧?如果是的话,应该是:34.5*(76.5-64.2)-12.3*14.5=12.3*(34.5-14.5)=246
125乘124分之123-123乘124分之1=125×124分之123-124分之123×1=(125-1)×124分之123=124×124分之123=123
123×45-45×23=45×(123-23)=45×100=4500
123*32+68*123=123*(32+68)=123*100=12300
123乘7加627乘7=(123+627)x7=750x7=5250
123^-122*118=123^2-123*118+118=123(123-118)+118=123*5+118=615+118=733