6.78*9.9+0.678的简便算式
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6.78*9.9+0.678的简便算式6.78*9.9+0.678的简便算式6.78*9.9+0.678的简便算式6.78*9.9+0.678=0.678(99+1)=0.678×100=67.86.
6.78*9.9+0.678的简便算式
6.78*9.9+0.678的简便算式
6.78*9.9+0.678的简便算式
6.78*9.9+0.678
=0.678(99+1)
=0.678×100
=67.8
6.78*9.9+0.678
=0.678*99+0.678
=0.678*(99+1)
=0.678*100
=67.8
原式=6.78*9.9+6.78*0.1
=6.78*(9.9+0.1)
=6.78*10
=67.8
6.78*10-6.78*0.1+6.78*0.1=67.8 自己算
呵呵楼主我来6.78*9.9+0.678
=6.78*9.9+6.78*0.1
=6.78*(9.9+0.1)
=6.78*10
=67.8
OK啦~ 望楼主采纳!咯~! 对了” * “ 这个符号是”乘“ 的意思哦。