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