［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
[076-00]
(1)
a
×
b
＋
10
÷
c
(2)
a
×
b
×
9
＋
c
(3)
a
÷
(
−2
)
＋
b
÷
c
(4)
a
÷
10
＋
b
×
c
＋
d
(5)
a
÷
(
−8
)
＋
b
(6)
3
÷
a
＋
b
÷
c
−
d
(7)
a
÷
b
−
10
(8)
a
×
b
＋
c
×
(
−5
)
(9)
5
×
a
＋
b
×
c
(10)
a
×
b
÷
(
−3
)
(11)
a
×
b
＋
10
(12)
7
×
a
＋
b
÷
c
＋
d
(13)
a
×
2
÷
b
−
c
÷
d
(14)
a
÷
b
＋
8
×
c
(15)
a
×
b
÷
c
−
d
÷
7
(16)
a
×
(
−2
)
÷
b
＋
c
(17)
a
÷
b
−
c
×
(
−4
)
(18)
a
×
b
＋
2
÷
c
(19)
a
÷
b
＋
9
(20)
a
÷
(
−3
)
＋
b
÷
c
−
d
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
×
b
＋
10
÷
c
10
=
a
b
＋
c
(2)
a
×
b
×
9
＋
c
=
9
a
b
＋
c
(3)
a
÷
(
−2
)
＋
b
÷
c
a
b
=
−
＋
2
c
(4)
a
÷
10
＋
b
×
c
＋
d
a
=
＋
b
c
＋
d
10
(5)
a
÷
(
−8
)
＋
b
a
=
−
＋
b
8
(6)
3
÷
a
＋
b
÷
c
−
d
3
b
=
＋
−
d
a
c
(7)
a
÷
b
−
10
a
=
−
10
b
(8)
a
×
b
＋
c
×
(
−5
)
=
a
b
−
5
c
(9)
5
×
a
＋
b
×
c
=
5
a
＋
b
c
(10)
a
×
b
÷
(
−3
)
a
b
=
−
3
(11)
a
×
b
＋
10
=
a
b
＋
10
(12)
7
×
a
＋
b
÷
c
＋
d
b
=
7
a
＋
＋
d
c
(13)
a
×
2
÷
b
−
c
÷
d
2
a
c
=
−
b
d
(14)
a
÷
b
＋
8
×
c
a
=
＋
8
c
b
(15)
a
×
b
÷
c
−
d
÷
7
a
b
d
=
−
c
7
(16)
a
×
(
−2
)
÷
b
＋
c
2
a
=
−
＋
c
b
(17)
a
÷
b
−
c
×
(
−4
)
a
=
＋
4
c
b
(18)
a
×
b
＋
2
÷
c
2
=
a
b
＋
c
(19)
a
÷
b
＋
9
a
=
＋
9
b
(20)
a
÷
(
−3
)
＋
b
÷
c
−
d
a
b
=
−
＋
−
d
3
c