［文字サイズの変更］
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©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)
10
÷
a
÷
b
(2)
(
−7
)
×
a
÷
b
(3)
a
÷
b
÷
c
÷
7
(4)
a
÷
(
−3
)
÷
b
÷
c
(5)
a
÷
(
−10
)
÷
b
(6)
(
−8
)
÷
a
÷
b
÷
c
÷
d
(7)
a
÷
3
×
b
(8)
6
÷
a
×
b
÷
c
(9)
a
×
(
−7
)
÷
b
×
c
×
d
(10)
a
÷
b
×
7
÷
c
×
d
(11)
a
÷
b
×
c
×
d
×
(
−10
)
(12)
a
÷
(
−8
)
×
b
(13)
a
÷
10
÷
b
(14)
(
−2
)
×
a
×
b
(15)
10
÷
a
÷
b
÷
c
÷
d
(16)
a
×
b
÷
(
−8
)
×
c
×
d
(17)
a
÷
b
×
c
÷
(
−6
)
(18)
(
−4
)
÷
a
÷
b
×
c
×
d
(19)
a
÷
b
×
(
−6
)
(20)
a
÷
b
÷
(
−8
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
10
÷
a
÷
b
10
=
a
b
(2)
(
−7
)
×
a
÷
b
7
a
=
−
b
(3)
a
÷
b
÷
c
÷
7
a
=
7
b
c
(4)
a
÷
(
−3
)
÷
b
÷
c
a
=
−
3
b
c
(5)
a
÷
(
−10
)
÷
b
a
=
−
10
b
(6)
(
−8
)
÷
a
÷
b
÷
c
÷
d
8
=
−
a
b
c
d
(7)
a
÷
3
×
b
a
b
=
3
(8)
6
÷
a
×
b
÷
c
6
b
=
a
c
(9)
a
×
(
−7
)
÷
b
×
c
×
d
7
a
c
d
=
−
b
(10)
a
÷
b
×
7
÷
c
×
d
7
a
d
=
b
c
(11)
a
÷
b
×
c
×
d
×
(
−10
)
10
a
c
d
=
−
b
(12)
a
÷
(
−8
)
×
b
a
b
=
−
8
(13)
a
÷
10
÷
b
a
=
10
b
(14)
(
−2
)
×
a
×
b
=
−2
a
b
(15)
10
÷
a
÷
b
÷
c
÷
d
10
=
a
b
c
d
(16)
a
×
b
÷
(
−8
)
×
c
×
d
a
b
c
d
=
−
8
(17)
a
÷
b
×
c
÷
(
−6
)
a
c
=
−
6
b
(18)
(
−4
)
÷
a
÷
b
×
c
×
d
4
c
d
=
−
a
b
(19)
a
÷
b
×
(
−6
)
6
a
=
−
b
(20)
a
÷
b
÷
(
−8
)
a
=
−
8
b