怎么算999.9乘36加666.6乘96的简便算法过程

问题描述:

怎么算999.9乘36加666.6乘96的简便算法过程

999.9×36+666.6×98
=999.9×36+666.6×1.5÷1.5×96
=999.9×36+999.9×64
=999.9×(36+64)
=999.9×100
=99990

  • 把96分解成1.5×64,在用乘法结合律变出相同的数999.9,最后用乘法分配律算出积!!!

         

 

         999.9×36+666.6×96

  =999.9×36+(666.6×1.5)×64

       =999.9×36+999.9×64

  =999.9×(36+64)

  =99990

999.9乘36加666.6乘96
=(333.3乘3)乘36加(333.3乘2)乘96
=333.3乘108加333.3乘192
=333.3乘(108+192)
=333.3乘300
=99990