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