1.25*3.2=1.25*8*0.4=10*0.4=4 希望我的回答能对你有帮助.
1.25X3.2的简便运算1.25*3.2=1.25*8*0.4=10*0.4=4
1.25x0.25x3.2=(1.25*0.8)*(0.25*4)=1*1=1
原式=1.25x0.25x(4x0.8)=(1.25x0.8)x(0.25x4)=1x1=1供参考.
=12.8
1.25*3.2=1.25*8*0.4=4
7.5x1.25x3.2=(3x2.5)x1.25x(4x0.8)=3 x(2.5x4)x(1.25x0.8)=3x10x1=30希望能帮到你!
0.25x1.25x3.2=0.25x4x1.25x0.8=1x1=1
1.25x0.25x3.2=(1.25x8)x(0.25x0.4)=10x0.1=1
2.5x1.25x3.2=2.5x4x1.25x0.8=10*1=10