题目内容
怎样简便怎样算.
1.73×3.5+3.5×4.27
3.36×2.5×0.4.
1.73×3.5+3.5×4.27
3.36×2.5×0.4.
分析:(1)根据乘法分配律进行简算;
(2)根据乘法结合律进行简算.
(2)根据乘法结合律进行简算.
解答:解:
(1)1.73×3.5+3.5×4.27,
=(1.73+4.27)×3.5,
=6×3.5,
=21;
(2)3.36×2.5×0.4,
=3.36×(2.5×0.4),
=3.36×1,
=3.36.
(1)1.73×3.5+3.5×4.27,
=(1.73+4.27)×3.5,
=6×3.5,
=21;
(2)3.36×2.5×0.4,
=3.36×(2.5×0.4),
=3.36×1,
=3.36.
点评:完成本题要注意分析式中数据,运用合适的简便方法计算.
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