125×34-26×125=125x(34-26)=125x8=10008×4×25×125=(8x125)x(4x25)=1000x100=100000105×16=100x16+5x16=1600+80=168073×99=73x100-73x1=7300-73=7227供参考。
125×34-26×125=125*(34-26)=125*8=1000