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