［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
[070-00]
(1)
a
×
(
−10
)
(2)
x
×
(
−10
)
(3)
x
×
8
(4)
4
×
m
(5)
(
−7
)
×
m
(6)
a
×
7
(7)
m
×
5
(8)
a
×
5
(9)
7
×
x
(10)
x
×
(
−5
)
(11)
a
×
9
(12)
8
×
p
(13)
4
×
a
(14)
p
×
(
−4
)
(15)
a
×
(
−4
)
(16)
x
×
10
(17)
8
×
x
(18)
p
×
9
(19)
c
×
(
−3
)
(20)
(
−2
)
×
x
(21)
c
×
3
(22)
c
×
(
−2
)
(23)
(
−10
)
×
x
(24)
5
×
x
(25)
m
×
(
−2
)
(26)
(
−2
)
×
a
(27)
x
×
8
(28)
(
−5
)
×
p
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
(
−10
)
=
−10
a
(2)
x
×
(
−10
)
=
−10
x
(3)
x
×
8
=
8
x
(4)
4
×
m
=
4
m
(5)
(
−7
)
×
m
=
−7
m
(6)
a
×
7
=
7
a
(7)
m
×
5
=
5
m
(8)
a
×
5
=
5
a
(9)
7
×
x
=
7
x
(10)
x
×
(
−5
)
=
−5
x
(11)
a
×
9
=
9
a
(12)
8
×
p
=
8
p
(13)
4
×
a
=
4
a
(14)
p
×
(
−4
)
=
−4
p
(15)
a
×
(
−4
)
=
−4
a
(16)
x
×
10
=
10
x
(17)
8
×
x
=
8
x
(18)
p
×
9
=
9
p
(19)
c
×
(
−3
)
=
−3
c
(20)
(
−2
)
×
x
=
−2
x
(21)
c
×
3
=
3
c
(22)
c
×
(
−2
)
=
−2
c
(23)
(
−10
)
×
x
=
−10
x
(24)
5
×
x
=
5
x
(25)
m
×
(
−2
)
=
−2
m
(26)
(
−2
)
×
a
=
−2
a
(27)
x
×
8
=
8
x
(28)
(
−5
)
×
p
=
−5
p