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