［文字サイズの変更］
▼
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©2018 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
×
8
(2)
(
−7
)
÷
a
×
b
÷
c
÷
d
(3)
a
×
b
÷
c
×
10
(4)
a
÷
(
−4
)
×
b
÷
c
×
d
(5)
a
÷
b
÷
(
−3
)
÷
c
×
d
(6)
a
÷
b
÷
c
÷
10
×
d
(7)
a
×
9
×
b
×
c
(8)
10
×
a
×
b
(9)
a
×
b
÷
7
(10)
a
÷
b
×
c
÷
d
÷
(
−4
)
(11)
(
−7
)
×
a
÷
b
×
c
(12)
(
−5
)
×
a
÷
b
÷
c
×
d
(13)
a
×
(
−8
)
×
b
×
c
(14)
a
÷
5
÷
b
(15)
a
÷
b
×
4
(16)
(
−6
)
÷
a
÷
b
÷
c
(17)
a
×
b
÷
c
×
(
−2
)
(18)
a
×
b
÷
c
×
2
÷
d
(19)
a
÷
b
×
(
−10
)
÷
c
(20)
a
÷
b
×
(
−9
)
×
c
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
b
×
8
=
8
a
b
(2)
(
−7
)
÷
a
×
b
÷
c
÷
d
7
b
=
−
a
c
d
(3)
a
×
b
÷
c
×
10
10
a
b
=
c
(4)
a
÷
(
−4
)
×
b
÷
c
×
d
a
b
d
=
−
4
c
(5)
a
÷
b
÷
(
−3
)
÷
c
×
d
a
d
=
−
3
b
c
(6)
a
÷
b
÷
c
÷
10
×
d
a
d
=
10
b
c
(7)
a
×
9
×
b
×
c
=
9
a
b
c
(8)
10
×
a
×
b
=
10
a
b
(9)
a
×
b
÷
7
a
b
=
7
(10)
a
÷
b
×
c
÷
d
÷
(
−4
)
a
c
=
−
4
b
d
(11)
(
−7
)
×
a
÷
b
×
c
7
a
c
=
−
b
(12)
(
−5
)
×
a
÷
b
÷
c
×
d
5
a
d
=
−
b
c
(13)
a
×
(
−8
)
×
b
×
c
=
−8
a
b
c
(14)
a
÷
5
÷
b
a
=
5
b
(15)
a
÷
b
×
4
4
a
=
b
(16)
(
−6
)
÷
a
÷
b
÷
c
6
=
−
a
b
c
(17)
a
×
b
÷
c
×
(
−2
)
2
a
b
=
−
c
(18)
a
×
b
÷
c
×
2
÷
d
2
a
b
=
c
d
(19)
a
÷
b
×
(
−10
)
÷
c
10
a
=
−
b
c
(20)
a
÷
b
×
(
−9
)
×
c
9
a
c
=
−
b