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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の式を，記号×÷を使って書きましょう
[07B-00]
(1)
a
4
−
6
c
b
(2)
3
3
a
(3)
9
a
4
＋
c
b
(4)
a
b
4
＋
3
c
d
(5)
2
3
a
b
(6)
3
10
a
(7)
3
2
＋
a
(8)
8
3
−
b
c
a
(9)
2
a
c
＋
d
＋
2
b
(10)
3
5
−
a
＋
b
(11)
2
a
＋
b
＋
3
(12)
a
3
−
10
c
b
(13)
3
a
−
2
(14)
4
7
＋
a
b
(15)
4
a
＋
8
(16)
4
7
a
(17)
4
10
a
−
b
(18)
3
a
＋
5
(19)
a
2
＋
8
c
b
(20)
3
a
＋
3
b
c
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
4
−
6
c
b
=
a
÷
b
−
6
×
c
×
c
×
c
×
c
(2)
3
3
a
=
3
×
3
×
3
×
a
(3)
9
a
4
＋
c
b
=
9
×
a
÷
b
＋
c
×
c
×
c
×
c
(4)
a
b
4
＋
3
c
d
=
a
×
b
÷
c
÷
d
＋
3
×
3
×
3
×
3
(5)
2
3
a
b
=
3
×
3
×
a
÷
b
(6)
3
10
a
=
10
×
a
×
a
×
a
(7)
3
2
＋
a
=
2
＋
a
×
a
×
a
(8)
8
3
−
b
c
a
=
8
÷
a
−
b
×
c
×
c
×
c
(9)
2
a
c
＋
d
＋
2
b
=
a
÷
b
×
c
×
c
＋
d
＋
2
(10)
3
5
−
a
＋
b
=
5
−
a
＋
b
×
b
×
b
(11)
2
a
＋
b
＋
3
=
a
＋
b
×
b
＋
3
(12)
a
3
−
10
c
b
=
a
÷
b
−
10
×
c
×
c
×
c
(13)
3
a
−
2
=
a
−
2
×
2
×
2
(14)
4
7
＋
a
b
=
7
＋
a
×
a
×
a
×
a
×
b
(15)
4
a
＋
8
=
a
＋
8
×
8
×
8
×
8
(16)
4
7
a
=
7
×
7
×
7
×
7
×
a
(17)
4
10
a
−
b
=
10
×
a
−
b
×
b
×
b
×
b
(18)
3
a
＋
5
=
a
＋
5
×
5
×
5
(19)
a
2
＋
8
c
b
=
a
÷
b
＋
8
×
8
×
c
(20)
3
a
＋
3
b
c
=
a
＋
3
×
3
×
3
×
b
×
c