4296-1296÷12+81251÷0.17+2.6×6×÷+×+÷125×0.32×25÷(+)×.
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解:(1)4296-1296÷12+812,
=4296-108+812,
=4188+812,
=5000;
(2)51÷0.17+2.6×6,
=300+15.6,
=315.6;
(3)×÷+,
=÷+,
=+,
=;
(4)×+÷,
=(+)×,
=1×,
=;
(5)125×0.32×25,
=125×0.8×0.4×25,
=(125×0.8)×(0.4×25),
=100×10,
=1000;
(6)÷(+)×,
=÷×,
=××,
=×,
=.
解析分析:(1)先算除法,再算减法,最后算加法;
(2)先同时运算乘法和乘法,再算加法;
(3)先算乘法,再算除法,最后算加法;
(4)运用运用乘法分配律简算;
(5)先把0.32分解成0.8×0.4,再运用乘法结合律简算;
(6)先算小括号里面的加法,再算括号外的除法,最后算乘法.
点评:此题主要考查分数、整数、小数的四则混合运算的运算顺序和应用运算定律进行简便计算.