［文字サイズの変更］
▼
▲
©2026 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
[07E-00]
(1)
a
÷
b
÷
c
×
(
d
÷
3
)
(2)
a
×
b
×
(
c
×
9
)
(3)
a
×
(
b
÷
3
)
×
c
(4)
a
÷
{
(
−6
)
÷
b
}
(5)
a
×
b
÷
(
c
÷
d
)
×
2
(6)
(
a
÷
b
)
÷
c
×
9
(7)
{
(
−8
)
×
a
}
×
b
(8)
a
×
{
(
−8
)
÷
b
}
÷
c
×
d
(9)
(
a
×
b
)
×
6
×
c
×
d
(10)
a
×
b
×
(
6
÷
c
)
×
d
(11)
a
×
(
3
÷
b
)
(12)
(
a
÷
b
)
÷
c
÷
d
×
3
(13)
{
a
×
(
−10
)
}
÷
b
(14)
{
a
×
(
−4
)
}
÷
b
(15)
a
÷
{
(
−8
)
×
b
}
(16)
a
÷
(
5
÷
b
)
(17)
3
÷
(
a
×
b
)
×
c
(18)
a
×
b
÷
{
c
÷
(
−2
)
}
(19)
6
÷
(
a
×
b
)
÷
c
(20)
a
÷
(
b
÷
2
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
÷
b
÷
c
×
(
d
÷
3
)
a
d
=
3
b
c
(2)
a
×
b
×
(
c
×
9
)
=
9
a
b
c
(3)
a
×
(
b
÷
3
)
×
c
a
b
c
=
3
(4)
a
÷
{
(
−6
)
÷
b
}
a
b
=
−
6
(5)
a
×
b
÷
(
c
÷
d
)
×
2
2
a
b
d
=
c
(6)
(
a
÷
b
)
÷
c
×
9
9
a
=
b
c
(7)
{
(
−8
)
×
a
}
×
b
=
−8
a
b
(8)
a
×
{
(
−8
)
÷
b
}
÷
c
×
d
8
a
d
=
−
b
c
(9)
(
a
×
b
)
×
6
×
c
×
d
=
6
a
b
c
d
(10)
a
×
b
×
(
6
÷
c
)
×
d
6
a
b
d
=
c
(11)
a
×
(
3
÷
b
)
3
a
=
b
(12)
(
a
÷
b
)
÷
c
÷
d
×
3
3
a
=
b
c
d
(13)
{
a
×
(
−10
)
}
÷
b
10
a
=
−
b
(14)
{
a
×
(
−4
)
}
÷
b
4
a
=
−
b
(15)
a
÷
{
(
−8
)
×
b
}
a
=
−
8
b
(16)
a
÷
(
5
÷
b
)
a
b
=
5
(17)
3
÷
(
a
×
b
)
×
c
3
c
=
a
b
(18)
a
×
b
÷
{
c
÷
(
−2
)
}
2
a
b
=
−
c
(19)
6
÷
(
a
×
b
)
÷
c
6
=
a
b
c
(20)
a
÷
(
b
÷
2
)
2
a
=
b