［文字サイズの変更］
▼
▲
©2019 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
÷
(
−6
)
÷
b
×
c
(3)
a
×
b
÷
3
×
c
÷
d
(4)
(
−7
)
÷
a
÷
b
÷
c
(5)
a
÷
b
×
10
(6)
a
×
b
÷
(
−4
)
÷
c
(7)
(
−4
)
×
a
÷
b
(8)
a
×
b
×
2
÷
c
(9)
a
÷
b
÷
c
×
(
−5
)
÷
d
(10)
a
÷
10
×
b
×
c
÷
d
(11)
a
×
b
×
c
×
6
(12)
a
×
(
−3
)
÷
b
÷
c
÷
d
(13)
a
×
4
×
b
÷
c
×
d
(14)
10
×
a
÷
b
(15)
a
×
5
×
b
×
c
(16)
9
×
a
×
b
(17)
a
÷
10
÷
b
÷
c
÷
d
(18)
10
×
a
÷
b
(19)
a
÷
b
×
c
×
5
(20)
a
×
b
×
4
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
b
×
3
×
c
=
3
a
b
c
(2)
a
÷
(
−6
)
÷
b
×
c
a
c
=
−
6
b
(3)
a
×
b
÷
3
×
c
÷
d
a
b
c
=
3
d
(4)
(
−7
)
÷
a
÷
b
÷
c
7
=
−
a
b
c
(5)
a
÷
b
×
10
10
a
=
b
(6)
a
×
b
÷
(
−4
)
÷
c
a
b
=
−
4
c
(7)
(
−4
)
×
a
÷
b
4
a
=
−
b
(8)
a
×
b
×
2
÷
c
2
a
b
=
c
(9)
a
÷
b
÷
c
×
(
−5
)
÷
d
5
a
=
−
b
c
d
(10)
a
÷
10
×
b
×
c
÷
d
a
b
c
=
10
d
(11)
a
×
b
×
c
×
6
=
6
a
b
c
(12)
a
×
(
−3
)
÷
b
÷
c
÷
d
3
a
=
−
b
c
d
(13)
a
×
4
×
b
÷
c
×
d
4
a
b
d
=
c
(14)
10
×
a
÷
b
10
a
=
b
(15)
a
×
5
×
b
×
c
=
5
a
b
c
(16)
9
×
a
×
b
=
9
a
b
(17)
a
÷
10
÷
b
÷
c
÷
d
a
=
10
b
c
d
(18)
10
×
a
÷
b
10
a
=
b
(19)
a
÷
b
×
c
×
5
5
a
c
=
b
(20)
a
×
b
×
4
=
4
a
b