简便运算. 0.25×4×0.885.5×10.11.25×8.8.
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解:(1)0.25×4×0.88,
=(0.25×4)×0.88,
=1×0.88,
=0.88;
(2)5.5×10.1,
=5.5×(10+0.1),
=5.5×10+5.5×0.1,
=55+0.55,
=55.55;
(3)1.25×8.8,
=1.25×(8+0.8),
=1.25×8+1.25×0.8,
=10+1,
=11.
解析分析:(1)运用乘法结合律简算;(2)把10.1看作10+0.1,运用乘法分配律简算;(3)把8.8看作8+0.8,运用乘法分配律简算.
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.