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