巧算157乘156分之33

问题描述:

巧算157乘156分之33

156分之5183

=(156+1)×33/156
=156×33/156+33/156
=33+33/156
=33又11/52

157×33/156
=(156+1)×33/156
=156×33/156+1×33/156
=33+33/156
=33又33/156
=33又11/52

巧算157乘156分之33
157*33/156
=(156+1)*33/156
=156*33/156+1*33/156
=33+33/156
=33又11/52