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©2026 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)
6
a
c
d
b
(2)
4
a
b
(3)
7
b
a
c
(4)
9
a
b
c
(5)
a
b
3
(6)
5
a
c
b
(7)
8
a
b
(8)
6
a
c
b
d
(9)
a
b
c
3
d
(10)
2
a
b
(11)
2
a
b
c
(12)
3
a
b
(13)
6
a
b
c
(14)
a
b
10
(15)
8
b
c
a
d
(16)
a
8
b
c
d
(17)
a
3
b
(18)
9
a
b
(19)
a
c
6
b
(20)
7
a
c
b
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
6
a
c
d
b
=
6
×
a
×
c
×
d
÷
b
(2)
4
a
b
=
4
×
a
×
b
(3)
7
b
a
c
=
7
×
b
÷
a
÷
c
(4)
9
a
b
c
=
9
×
a
÷
b
÷
c
(5)
a
b
3
=
a
×
b
÷
3
(6)
5
a
c
b
=
5
×
a
×
c
÷
b
(7)
8
a
b
=
8
×
a
×
b
(8)
6
a
c
b
d
=
6
×
a
×
c
÷
b
÷
d
(9)
a
b
c
3
d
=
a
×
b
×
c
÷
3
÷
d
(10)
2
a
b
=
2
×
a
×
b
(11)
2
a
b
c
=
2
×
a
×
b
×
c
(12)
3
a
b
=
3
÷
a
÷
b
(13)
6
a
b
c
=
6
×
a
÷
b
÷
c
(14)
a
b
10
=
a
×
b
÷
10
(15)
8
b
c
a
d
=
8
×
b
×
c
÷
a
÷
d
(16)
a
8
b
c
d
=
a
÷
8
÷
b
÷
c
÷
d
(17)
a
3
b
=
a
÷
3
÷
b
(18)
9
a
b
=
9
×
a
×
b
(19)
a
c
6
b
=
a
×
c
÷
6
÷
b
(20)
7
a
c
b
=
7
×
a
×
c
÷
b