计算下面各题,能简算的要简算. 4.05÷0.9+3.253.67×10.1-3.67×0.199×0.73+0.7315+6.7×3.5.
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解:(1)4.05÷0.9+3.25,
=4.5+3.25,
=7.75;
(2)3.67×10.1-3.67×0.1,
=3.67×(10.1-0.1),
=3.67×10,
=36.7;
(3)99×0.73+0.73,
=(99+1)×0.73,
=100×0.73,
=73;
(4)15+6.7×3.5,
=15+23.45,
=38.45.
解析分析:(1)先算除法,再算加法;(2)(3)运用乘法分配律简算;(4)先算乘法,再算加法.
点评:考查了小数的四则混合运算,注意运算顺序和运算法则,灵活运用所学的运算律简便计算.