题目内容
| 用你认为最简便的方法,计算下面各题. 208÷13×17 | 125×13×8 | 625÷25×4 |
| 638+195+805 | 136-(36+48) | 864÷(228-192) |
(1)208÷13×17
=16×17
=272;
(2)125×13×8
=125×8×13
=1000×13
=13000;
(3)625÷25×4
=25÷4
=100;
(4)638+195+805
=638+(195+805)
=638+1000
=1638;
(5)136-(36+48)
=136-36-48
=100-48
=52;
(6)864÷(228-192)
=864÷36
=24.
=16×17
=272;
(2)125×13×8
=125×8×13
=1000×13
=13000;
(3)625÷25×4
=25÷4
=100;
(4)638+195+805
=638+(195+805)
=638+1000
=1638;
(5)136-(36+48)
=136-36-48
=100-48
=52;
(6)864÷(228-192)
=864÷36
=24.
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