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