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