［文字サイズの変更］
▼
▲
©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 次の式を，文字式の表し方にしたがって書きましょう
[07C-00]
(1)
a
×
b
×
9
×
c
÷
d
(2)
a
×
(
−3
)
÷
b
(3)
(
−8
)
÷
a
÷
b
÷
c
÷
d
(4)
(
−2
)
×
a
×
b
÷
c
(5)
(
−6
)
÷
a
×
b
×
c
(6)
2
÷
a
×
b
(7)
a
÷
b
÷
(
−9
)
(8)
2
÷
a
×
b
÷
c
×
d
(9)
a
×
(
−3
)
÷
b
×
c
÷
d
(10)
a
÷
4
×
b
(11)
4
×
a
÷
b
(12)
a
×
b
×
c
÷
(
−6
)
÷
d
(13)
a
÷
(
−6
)
÷
b
÷
c
×
d
(14)
a
×
b
×
(
−7
)
÷
c
×
d
(15)
(
−8
)
×
a
÷
b
(16)
a
×
b
×
c
×
(
−7
)
÷
d
(17)
a
÷
b
÷
5
÷
c
×
d
(18)
a
×
(
−8
)
÷
b
(19)
a
÷
(
−4
)
÷
b
(20)
a
÷
b
÷
(
−5
)
×
c
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
b
×
9
×
c
÷
d
9
a
b
c
=
d
(2)
a
×
(
−3
)
÷
b
3
a
=
−
b
(3)
(
−8
)
÷
a
÷
b
÷
c
÷
d
8
=
−
a
b
c
d
(4)
(
−2
)
×
a
×
b
÷
c
2
a
b
=
−
c
(5)
(
−6
)
÷
a
×
b
×
c
6
b
c
=
−
a
(6)
2
÷
a
×
b
2
b
=
a
(7)
a
÷
b
÷
(
−9
)
a
=
−
9
b
(8)
2
÷
a
×
b
÷
c
×
d
2
b
d
=
a
c
(9)
a
×
(
−3
)
÷
b
×
c
÷
d
3
a
c
=
−
b
d
(10)
a
÷
4
×
b
a
b
=
4
(11)
4
×
a
÷
b
4
a
=
b
(12)
a
×
b
×
c
÷
(
−6
)
÷
d
a
b
c
=
−
6
d
(13)
a
÷
(
−6
)
÷
b
÷
c
×
d
a
d
=
−
6
b
c
(14)
a
×
b
×
(
−7
)
÷
c
×
d
7
a
b
d
=
−
c
(15)
(
−8
)
×
a
÷
b
8
a
=
−
b
(16)
a
×
b
×
c
×
(
−7
)
÷
d
7
a
b
c
=
−
d
(17)
a
÷
b
÷
5
÷
c
×
d
a
d
=
5
b
c
(18)
a
×
(
−8
)
÷
b
8
a
=
−
b
(19)
a
÷
(
−4
)
÷
b
a
=
−
4
b
(20)
a
÷
b
÷
(
−5
)
×
c
a
c
=
−
5
b