［文字サイズの変更］
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©2018 数学クラブ http://sugaku.club/
月 日（ ）
● 次の式を，記号×÷を使って書きましょう
[07D-00]
(1)
2
b
a
(2)
6
a
b
(3)
8
a
b
c
d
(4)
3
c
a
b
(5)
6
a
b
c
(6)
7
a
b
c
(7)
8
a
b
c
(8)
a
b
2
c
(9)
3
a
c
b
(10)
6
a
b
(11)
2
a
d
b
c
(12)
5
a
b
c
d
(13)
2
a
d
b
c
(14)
2
a
b
(15)
5
a
b
(16)
7
a
b
(17)
9
a
b
c
(18)
a
b
3
c
d
(19)
8
a
b
c
d
(20)
5
a
c
b
d
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
b
a
=
2
×
b
÷
a
(2)
6
a
b
=
6
×
a
×
b
(3)
8
a
b
c
d
=
8
×
a
×
b
×
c
×
d
(4)
3
c
a
b
=
3
×
c
÷
a
÷
b
(5)
6
a
b
c
=
6
×
a
÷
b
÷
c
(6)
7
a
b
c
=
7
÷
a
÷
b
÷
c
(7)
8
a
b
c
=
8
×
a
×
b
×
c
(8)
a
b
2
c
=
a
×
b
÷
2
÷
c
(9)
3
a
c
b
=
3
×
a
×
c
÷
b
(10)
6
a
b
=
6
×
a
÷
b
(11)
2
a
d
b
c
=
2
×
a
×
d
÷
b
÷
c
(12)
5
a
b
c
d
=
5
×
a
×
b
×
c
÷
d
(13)
2
a
d
b
c
=
2
×
a
×
d
÷
b
÷
c
(14)
2
a
b
=
2
×
a
×
b
(15)
5
a
b
=
5
×
a
×
b
(16)
7
a
b
=
7
×
a
÷
b
(17)
9
a
b
c
=
9
×
a
÷
b
÷
c
(18)
a
b
3
c
d
=
a
×
b
÷
3
÷
c
÷
d
(19)
8
a
b
c
d
=
8
×
a
×
b
×
c
×
d
(20)
5
a
c
b
d
=
5
×
a
×
c
÷
b
÷
d