［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
[07E-00]
(1)
a
×
b
×
{
(
−6
)
×
c
}
(2)
(
3
÷
a
)
÷
b
×
c
÷
d
(3)
{
(
−4
)
×
a
}
×
b
×
c
(4)
a
÷
b
×
c
×
(
5
÷
d
)
(5)
a
÷
{
(
−7
)
÷
b
}
(6)
a
×
b
÷
(
−4
)
×
(
c
×
d
)
(7)
a
×
(
b
÷
9
)
(8)
(
−2
)
÷
(
a
÷
b
)
(9)
(
−4
)
÷
(
a
×
b
)
×
c
×
d
(10)
(
6
×
a
)
×
b
÷
c
×
d
(11)
(
a
÷
b
)
÷
9
(12)
(
a
×
7
)
÷
b
×
c
(13)
a
÷
b
×
{
(
−8
)
×
c
}
(14)
(
a
÷
4
)
×
b
÷
c
÷
d
(15)
a
÷
{
(
−6
)
÷
b
}
(16)
{
a
÷
(
−2
)
}
×
b
(17)
a
×
{
b
÷
(
−6
)
}
×
c
×
d
(18)
(
a
×
b
)
÷
c
×
5
×
d
(19)
a
÷
(
10
÷
b
)
×
c
(20)
a
×
{
(
−9
)
×
b
}
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
b
×
{
(
−6
)
×
c
}
=
−6
a
b
c
(2)
(
3
÷
a
)
÷
b
×
c
÷
d
3
c
=
a
b
d
(3)
{
(
−4
)
×
a
}
×
b
×
c
=
−4
a
b
c
(4)
a
÷
b
×
c
×
(
5
÷
d
)
5
a
c
=
b
d
(5)
a
÷
{
(
−7
)
÷
b
}
a
b
=
−
7
(6)
a
×
b
÷
(
−4
)
×
(
c
×
d
)
a
b
c
d
=
−
4
(7)
a
×
(
b
÷
9
)
a
b
=
9
(8)
(
−2
)
÷
(
a
÷
b
)
2
b
=
−
a
(9)
(
−4
)
÷
(
a
×
b
)
×
c
×
d
4
c
d
=
−
a
b
(10)
(
6
×
a
)
×
b
÷
c
×
d
6
a
b
d
=
c
(11)
(
a
÷
b
)
÷
9
a
=
9
b
(12)
(
a
×
7
)
÷
b
×
c
7
a
c
=
b
(13)
a
÷
b
×
{
(
−8
)
×
c
}
8
a
c
=
−
b
(14)
(
a
÷
4
)
×
b
÷
c
÷
d
a
b
=
4
c
d
(15)
a
÷
{
(
−6
)
÷
b
}
a
b
=
−
6
(16)
{
a
÷
(
−2
)
}
×
b
a
b
=
−
2
(17)
a
×
{
b
÷
(
−6
)
}
×
c
×
d
a
b
c
d
=
−
6
(18)
(
a
×
b
)
÷
c
×
5
×
d
5
a
b
d
=
c
(19)
a
÷
(
10
÷
b
)
×
c
a
b
c
=
10
(20)
a
×
{
(
−9
)
×
b
}
=
−9
a
b