用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.

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用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.用简便方法计算.

用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.
用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.

用简便方法计算.6.5X68十6.5X31十6.5.0.27X0.12十0.88X0.27.
运用乘法分配律简便计算.
6.5×68+6.5×31+6.5
=6.5×(68+31+1)
=6.5×100
=650
0.27×0.12十0.88×0.27
=.27×(0.12+0.88)
=0.27×1
=0.27.