［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，文字式の表し方にしたがって書きましょう
[07C-00]
(1)
a
÷
b
×
c
×
d
×
9
(2)
a
÷
b
÷
8
×
c
×
d
(3)
a
×
(
−6
)
÷
b
(4)
a
÷
b
×
c
×
2
÷
d
(5)
a
×
b
×
(
−4
)
×
c
×
d
(6)
a
÷
b
÷
(
−9
)
(7)
a
÷
3
÷
b
÷
c
(8)
a
÷
b
×
c
÷
d
×
8
(9)
a
×
b
÷
6
÷
c
×
d
(10)
a
÷
4
÷
b
×
c
÷
d
(11)
a
×
(
−9
)
×
b
×
c
(12)
a
÷
(
−8
)
×
b
(13)
4
×
a
÷
b
(14)
a
÷
b
×
c
÷
d
×
(
−7
)
(15)
a
÷
b
×
(
−3
)
(16)
a
×
b
÷
c
×
(
−9
)
(17)
a
×
b
÷
c
÷
5
×
d
(18)
a
÷
b
×
3
×
c
÷
d
(19)
(
−8
)
×
a
÷
b
×
c
(20)
a
×
8
÷
b
×
c
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
÷
b
×
c
×
d
×
9
9
a
c
d
=
b
(2)
a
÷
b
÷
8
×
c
×
d
a
c
d
=
8
b
(3)
a
×
(
−6
)
÷
b
6
a
=
−
b
(4)
a
÷
b
×
c
×
2
÷
d
2
a
c
=
b
d
(5)
a
×
b
×
(
−4
)
×
c
×
d
=
−4
a
b
c
d
(6)
a
÷
b
÷
(
−9
)
a
=
−
9
b
(7)
a
÷
3
÷
b
÷
c
a
=
3
b
c
(8)
a
÷
b
×
c
÷
d
×
8
8
a
c
=
b
d
(9)
a
×
b
÷
6
÷
c
×
d
a
b
d
=
6
c
(10)
a
÷
4
÷
b
×
c
÷
d
a
c
=
4
b
d
(11)
a
×
(
−9
)
×
b
×
c
=
−9
a
b
c
(12)
a
÷
(
−8
)
×
b
a
b
=
−
8
(13)
4
×
a
÷
b
4
a
=
b
(14)
a
÷
b
×
c
÷
d
×
(
−7
)
7
a
c
=
−
b
d
(15)
a
÷
b
×
(
−3
)
3
a
=
−
b
(16)
a
×
b
÷
c
×
(
−9
)
9
a
b
=
−
c
(17)
a
×
b
÷
c
÷
5
×
d
a
b
d
=
5
c
(18)
a
÷
b
×
3
×
c
÷
d
3
a
c
=
b
d
(19)
(
−8
)
×
a
÷
b
×
c
8
a
c
=
−
b
(20)
a
×
8
÷
b
×
c
8
a
c
=
b