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