［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
÷
8
)
÷
b
×
c
(2)
a
÷
b
×
{
(
−3
)
×
c
}
(3)
(
a
÷
8
)
×
b
×
c
×
d
(4)
(
a
×
b
)
×
c
×
(
−3
)
(5)
a
×
{
b
×
(
−4
)
}
(6)
{
a
×
(
−4
)
}
×
b
(7)
a
×
b
×
(
c
÷
3
)
(8)
(
a
×
b
)
×
c
÷
7
(9)
a
×
b
×
{
c
÷
(
−5
)
}
(10)
(
a
×
b
)
×
c
÷
d
×
(
−4
)
(11)
{
a
÷
(
−4
)
}
×
b
(12)
(
a
×
b
)
÷
(
−9
)
(13)
7
÷
(
a
×
b
)
(14)
(
a
×
b
)
÷
(
−3
)
÷
c
(15)
a
×
(
b
×
4
)
(16)
a
÷
b
×
{
c
÷
(
−9
)
}
(17)
(
10
÷
a
)
×
b
÷
c
(18)
a
÷
{
(
−5
)
÷
b
}
÷
c
(19)
a
×
b
÷
{
(
−4
)
×
c
}
÷
d
(20)
a
÷
6
÷
(
b
×
c
)
×
d
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
(
a
÷
8
)
÷
b
×
c
a
c
=
8
b
(2)
a
÷
b
×
{
(
−3
)
×
c
}
3
a
c
=
−
b
(3)
(
a
÷
8
)
×
b
×
c
×
d
a
b
c
d
=
8
(4)
(
a
×
b
)
×
c
×
(
−3
)
=
−3
a
b
c
(5)
a
×
{
b
×
(
−4
)
}
=
−4
a
b
(6)
{
a
×
(
−4
)
}
×
b
=
−4
a
b
(7)
a
×
b
×
(
c
÷
3
)
a
b
c
=
3
(8)
(
a
×
b
)
×
c
÷
7
a
b
c
=
7
(9)
a
×
b
×
{
c
÷
(
−5
)
}
a
b
c
=
−
5
(10)
(
a
×
b
)
×
c
÷
d
×
(
−4
)
4
a
b
c
=
−
d
(11)
{
a
÷
(
−4
)
}
×
b
a
b
=
−
4
(12)
(
a
×
b
)
÷
(
−9
)
a
b
=
−
9
(13)
7
÷
(
a
×
b
)
7
=
a
b
(14)
(
a
×
b
)
÷
(
−3
)
÷
c
a
b
=
−
3
c
(15)
a
×
(
b
×
4
)
=
4
a
b
(16)
a
÷
b
×
{
c
÷
(
−9
)
}
a
c
=
−
9
b
(17)
(
10
÷
a
)
×
b
÷
c
10
b
=
a
c
(18)
a
÷
{
(
−5
)
÷
b
}
÷
c
a
b
=
−
5
c
(19)
a
×
b
÷
{
(
−4
)
×
c
}
÷
d
a
b
=
−
4
c
d
(20)
a
÷
6
÷
(
b
×
c
)
×
d
a
d
=
6
b
c