在括号里填上适当的数.712=7×()12×()=21()642=6÷()42÷()=()712=()8410=()51618=8()35=12()824=()3=2()610=()20=3()=18

题目简介

在括号里填上适当的数.712=7×()12×()=21()642=6÷()42÷()=()712=()8410=()51618=8()35=12()824=()3=2()610=()20=3()=18

题目详情

在括号里填上适当的数.
7
12
=
7×()
12×()
=
21
()
6
42
=
6÷()
42÷()
=
()
7

1
2
=
()
8
4
10
=
()
5
16
18
=
8
()
3
5
=
12
()

8
24
=
()
3
=
2
()
6
10
=
()
20
=
3
()
=
18
()
题型:填空题难度:中档来源:不详

答案

(1)class="stub"7
12
=
7×(2)
12×(2)
=class="stub"21
(36)


(2)class="stub"6
42
=
6÷(6)
42÷(6)
=
(1)
7


(3)class="stub"1
2
=
(4)
8


(4)class="stub"4
10
=
(2)
5


(5)class="stub"16
18
=class="stub"8
(9)


(6)class="stub"3
5
=class="stub"12
(20)


(7)class="stub"8
24
=
(1)
3
=class="stub"2
(6)


(8)class="stub"6
10
=
(12)
20
=class="stub"3
(5)
=class="stub"18
(30)

故答案为:2,36; 6,1;4;2;9;20;1,6;12,5,30.

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