［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
[07E-00]
(1)
a
÷
(
−5
)
×
b
÷
(
c
÷
d
)
(2)
a
÷
b
÷
{
c
×
(
−10
)
}
(3)
a
×
b
×
{
c
×
(
−6
)
}
×
d
(4)
a
÷
{
b
×
(
−6
)
}
÷
c
(5)
(
a
÷
b
)
×
c
÷
(
−8
)
(6)
{
a
×
(
−8
)
}
×
b
(7)
a
×
(
b
×
9
)
(8)
(
a
×
b
)
×
(
−2
)
(9)
a
÷
b
÷
{
(
−6
)
×
c
}
(10)
(
a
×
b
)
÷
c
÷
(
−9
)
×
d
(11)
(
−8
)
×
(
a
÷
b
)
÷
c
(12)
a
×
(
b
÷
c
)
×
(
−3
)
(13)
a
÷
{
b
÷
(
−9
)
}
(14)
a
÷
b
×
{
(
−5
)
×
c
}
(15)
a
÷
{
b
×
(
−10
)
}
÷
c
÷
d
(16)
a
÷
b
÷
(
6
÷
c
)
(17)
(
−9
)
÷
(
a
÷
b
)
×
c
÷
d
(18)
a
÷
(
b
×
9
)
(19)
{
(
−6
)
×
a
}
÷
b
÷
c
÷
d
(20)
(
a
÷
b
)
×
(
−10
)
÷
c
×
d
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
÷
(
−5
)
×
b
÷
(
c
÷
d
)
a
b
d
=
−
5
c
(2)
a
÷
b
÷
{
c
×
(
−10
)
}
a
=
−
10
b
c
(3)
a
×
b
×
{
c
×
(
−6
)
}
×
d
=
−6
a
b
c
d
(4)
a
÷
{
b
×
(
−6
)
}
÷
c
a
=
−
6
b
c
(5)
(
a
÷
b
)
×
c
÷
(
−8
)
a
c
=
−
8
b
(6)
{
a
×
(
−8
)
}
×
b
=
−8
a
b
(7)
a
×
(
b
×
9
)
=
9
a
b
(8)
(
a
×
b
)
×
(
−2
)
=
−2
a
b
(9)
a
÷
b
÷
{
(
−6
)
×
c
}
a
=
−
6
b
c
(10)
(
a
×
b
)
÷
c
÷
(
−9
)
×
d
a
b
d
=
−
9
c
(11)
(
−8
)
×
(
a
÷
b
)
÷
c
8
a
=
−
b
c
(12)
a
×
(
b
÷
c
)
×
(
−3
)
3
a
b
=
−
c
(13)
a
÷
{
b
÷
(
−9
)
}
9
a
=
−
b
(14)
a
÷
b
×
{
(
−5
)
×
c
}
5
a
c
=
−
b
(15)
a
÷
{
b
×
(
−10
)
}
÷
c
÷
d
a
=
−
10
b
c
d
(16)
a
÷
b
÷
(
6
÷
c
)
a
c
=
6
b
(17)
(
−9
)
÷
(
a
÷
b
)
×
c
÷
d
9
b
c
=
−
a
d
(18)
a
÷
(
b
×
9
)
a
=
9
b
(19)
{
(
−6
)
×
a
}
÷
b
÷
c
÷
d
6
a
=
−
b
c
d
(20)
(
a
÷
b
)
×
(
−10
)
÷
c
×
d
10
a
d
=
−
b
c