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计算下面各题 能用简便算法的就用简便算法. (1)710÷9+310×19(2)75-58-
问题详情
计算下面各题,能用简便算法的就用简便算法.
参考答案
(1)710÷9+310×19,
=710×19+310×19,
=(710+310)×19,
=1×19,
=19;
(2)75-58-916÷32,
=75-58-38,
=75-(58+38),
=75-1,
=25;
(3)(34-18)÷512,
=58÷512,
=32;
(4)45÷[(12+25)×23],
=45÷[910×23],
=45÷35,
=43.
考点:算法