415×______=35×53=______÷34=b×______(b≠0)-数学

题目简介

415×______=35×53=______÷34=b×______(b≠0)-数学

题目详情

4
1
5
×______=
3
5
×
5
3
=______÷
3
4
=b×______(b≠0)
题型:解答题难度:中档来源:不详

答案

class="stub"3
5
×class="stub"5
3
=1,
4class="stub"1
5
=class="stub"21
5
class="stub"21
5
的倒数是class="stub"5
21
,则4class="stub"1
5
的倒数是class="stub"5
21

class="stub"3
4
÷class="stub"3
4
=1,
1÷b=class="stub"1
b

所以4class="stub"1
5
×class="stub"5
21
=class="stub"3
5
×class="stub"5
3
=class="stub"3
4
÷class="stub"3
4
=b×class="stub"1
b
(b≠0),
故答案为:class="stub"5
21
class="stub"3
4
class="stub"1
b

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