问题 解答题
下面各题,如何简算就如何算.
45×18197+46+5413×25×4630÷35.
答案

(1)45×18,

=45×2×9,

=90×9,

=810;

(2)197+46+54,

=197+(46+54),

=197+100,

=297;

(3)13×25×4,

=13×(25×4),

=13×100,

=1300;

(4)630÷35,

=630÷(7×5),

=630÷7÷5,

=90÷5,

=18.

论述题
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