题文
(1)(﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094544362663.png)
)﹣7﹣2+8﹣(![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094544491687.png)
);
(2)3﹣[﹣(﹣3)﹣12]+8﹣(9﹣10);
(3)![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/201209210945446062252.png)
;
(4)﹣3×(﹣2)2﹣(﹣1)100÷0.25;
(5)![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/201209210945447173753.png)
;
(6)99![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094544834864.png)
×(﹣34)(用简便方法计算);
(7)﹣14﹣[2﹣(1﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094544946575.png)
×0.5)]×[32﹣(﹣2)2];
(8)根据输入的有理数,按右图中程序计算,并把输出的结果填入表内:
题型:未知 难度:其他题型
答案
解:(1)原式=﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094545696658.png)
﹣9+8+![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094545805671.png)
=![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094545917639.png)
﹣1
=﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546030627.png)
;
(2)原式=3﹣(3﹣12)+8﹣(﹣1)
=3+9+9
=21;
(3)原式=﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546148612.png)
×![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546544626.png)
×(﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546653644.png)
=3;
(4)原式=﹣3×4﹣1×4
=﹣12﹣4
=﹣16;
(5)原式=(﹣5+13﹣3)×(﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546762748.png)
)
=5×(﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546871748.png)
)
=﹣11;
(6)原式=(99+![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094546984875.png)
)×(﹣34)
=99×(﹣34)+(﹣32)
=﹣3398;
(7)原式=﹣1﹣[2﹣(1﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094547097613.png)
)]×(9﹣4)
=﹣1﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094547206641.png)
×5
=﹣![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094547316741.png)
;
(8)![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/201209210945474291795.png)
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解析
该题暂无解析
考点
据考高分专家说,试题“(1)(﹣)﹣7﹣2+8﹣();(.....”主要考查你对 [有理数的混合运算 ]考点的理解。
有理数的混合运算
有理数的混合运算:
是一个运算式子中有加有减有乘有除有次方等运算方式的混合运算方式。
有理数混合运算的规律:
(1)先乘方,再乘除,最后加减;
(2)同级运算,从左到右进行;
(3)若有括号,先做括号内的运算,按小括号、中括号、大括号依次进行计算。


![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/20120921094545063837.png)
![﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;; ﹣7﹣2+8﹣;3﹣[﹣﹣12]+8﹣;;﹣3×2﹣100÷0.25;;](https://www.mshxw.com/file/tupian/20211120/2012092109454558612981.png)
