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