精英家教网 > 小学数学 > 题目详情
3
4
×
4
3
4
3
=
2
5
×
5
2
5
2
=
7
8
÷
7
8
7
8
=
1
7
1
7
÷
1
7
=1.
分析:根据倒数的意义和一个不为0的数除以它本身得1,直接进行解答.
解答:解:
3
4
的倒数是
4
3
2
5
的倒数是
5
2

7
8
÷
7
8
=1,
1
7
÷
1
7
=1,
所以
3
4
×
4
3
=
2
5
×
5
2
=
7
8
÷
7
8
=
1
7
÷
1
7
=1.
故答案为:
4
3
5
2
7
8
1
7
点评:此题也可以根据乘、除法各部分之间的关系解答.
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