学习有理数的乘法后,老师给同学们这样一道题目:
计算:
,看谁算的又简便又对.
小军同学的做法如下:
原式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6c17e4c00d2ed54e4ec6625ff7b918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d18c58499b6922ffb3daf439a3efe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eba1ec3a632f38edcd90a208a441d7b.png)
.
根据上面解法对你的启发,用合适的方法计算:
.
计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68e47ab74666e9aa928b6f599617b19.png)
小军同学的做法如下:
原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6c17e4c00d2ed54e4ec6625ff7b918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d18c58499b6922ffb3daf439a3efe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eba1ec3a632f38edcd90a208a441d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0192e3da195fd7e5585bf6c96eb36d16.png)
根据上面解法对你的启发,用合适的方法计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e48fa7ed5490c4e2b3ea7f1190cf0a4.png)
更新时间:2023-10-14 10:50:19
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解答题-计算题
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(0.85)
【推荐1】下面是小颖计算
的过程,请你在运算步骤后的括号内填写运算依据.
解:原式
( )
( )
( )
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d45e10731743d3be8b971a7bbf5f9b38.png)
解:原式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae259c3ccadf4d9906f472e0a7e9603a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2713af19632636439c8d933d263977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0790c0a420b3445820753354f3027c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a694a48b5d5205bf38696765646f275.png)
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解答题-问答题
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较易
(0.85)
名校
【推荐1】直接写结果.
(1)
______;
(2)
______;
(3)
______;
(4)
______;
(5)
______;
(6)
______.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aada7bc24e934c786213c746a73c21d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba4ed20016fbad1d0de51b7d4632214.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97af1165ae7ec0592e63994b5398e2e6.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fe949393dc239d480c9dcf023135a8.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd2490fa76926ee61eecd9352708fad.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/672201c6f713ff1f152e057b3045dbda.png)
您最近一年使用:0次