(1)________
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1746dca7a3cba088a6553d8a7730036.png)
_____
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa70c6602ec25246b8950ccee8b73e69.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78ba1947a6ffcc588da4a5e1504e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1746dca7a3cba088a6553d8a7730036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ab1be5dddd05ec4704baffb9521475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa70c6602ec25246b8950ccee8b73e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f2200782fb3e77e6ca617e2dc8e2c8.png)
更新时间:2023-12-04 06:54:48
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【推荐1】1.写出下列算式的结果.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21b3fd7fac36284fc5220afd6102a54.png)
___________ .
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fff3648a256f989084604d7f6cbd2a9.png)
__________ .
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb2a02103f903c6c5f5fe3d4645deaa.png)
___________ .
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38abfb0746f395642a803011ac02616.png)
_____________ .
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21b3fd7fac36284fc5220afd6102a54.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fff3648a256f989084604d7f6cbd2a9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcb2a02103f903c6c5f5fe3d4645deaa.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38abfb0746f395642a803011ac02616.png)
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【推荐2】(1)不为0的有理数相乘,先确定积的______ ,再算______ 的积,而把有理数的求积问题转化为小学学过的乘法.
(2)当乘数中有负号时,第一个负因数可以不用括号,但是后面的负因数必须用括号括起来.例如题(1)中的
也可以写成
.但不能写成
.
(3)_____ 乘任何数都等于0
(2)当乘数中有负号时,第一个负因数可以不用括号,但是后面的负因数必须用括号括起来.例如题(1)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b955b5e0a4047f256800561d20b39b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4147512b3abb1c8c217bbaefd0c3d81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1836ca55a8712ff2f345a5925d22a6e6.png)
(3)
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