1.43+2.95-0.43×-(-)6.4÷0.4÷0.2595×+95×

发布时间:2020-08-06 23:49:33

1.43+2.95-0.43×-(-)6.4÷0.4÷0.2595×+95×

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解:
(1)1.43+2.95-0.43,
=1.43-0.43+2.95,
=1+2.95,
=3.95;

(2)×-(-),
=-,
=;

(3)6.4÷0.4÷0.25,
=6.4÷(0.4×0.25),
=6.4÷0.1,
=64;

(4)95×+95×,
=95×(+),
=95×1,
=95.
解析分析:(1)根据加法交换律进行计算;
(2)先算乘法和小括号里面的减法,最后算括号外面的减法;
(3)根据连除的性质进行计算;
(4)根据乘法分配律进行计算.


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.
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