25乘31乘125怎麼簡算

25乘31乘125怎麼簡算


5~2*(2~5-1)*5~3=5~5*(2~5-1)=10~5-5~5=100000-3125=96875



365乘2乘125乘5乘25乘4乘8簡算


365乘2乘125乘5乘25乘4乘8
=365*(2*125)*5*(25*4)*8
=365*250*5*100*8
=365*(250*4)*(5*2)*100
=365*1000*10*100
=365000000



簡便計算13.74-(3.74+2.56)


13.74-(3.74+2.56)
=13.74-3.74-2.56
=10-2.56
=7.44