题目内容
用自己喜欢的方法计算.
| (1)5.6×5.3+4.7×5.6 | (2)1.25×1.37×80. |
(1)5.6×5.3+4.7×5.6,
=5.6×(5.3+4.7),
=5.6×10,
=56;
(2)1.25×1.37×80,
=1.25×80×1.37,
=100×1.37,
=137.
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题目内容
| (1)5.6×5.3+4.7×5.6 | (2)1.25×1.37×80. |