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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
[07D-00]
(1)
a
b
c
6
(2)
a
5
b
(3)
a
b
c
4
(4)
10
c
a
b
(5)
7
a
c
d
b
(6)
7
a
c
b
(7)
10
a
b
c
d
(8)
a
b
5
c
d
(9)
10
a
b
d
c
(10)
5
a
b
(11)
6
a
b
(12)
2
a
b
c
d
(13)
3
a
b
c
(14)
6
a
c
b
(15)
a
c
2
b
d
(16)
3
a
b
(17)
a
b
7
c
d
(18)
6
a
b
(19)
10
a
b
c
(20)
2
a
d
b
c
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
a
b
c
6
=
a
×
b
×
c
÷
6
(2)
a
5
b
=
a
÷
5
÷
b
(3)
a
b
c
4
=
a
×
b
×
c
÷
4
(4)
10
c
a
b
=
10
×
c
÷
a
÷
b
(5)
7
a
c
d
b
=
7
×
a
×
c
×
d
÷
b
(6)
7
a
c
b
=
7
×
a
×
c
÷
b
(7)
10
a
b
c
d
=
10
×
a
÷
b
÷
c
÷
d
(8)
a
b
5
c
d
=
a
×
b
÷
5
÷
c
÷
d
(9)
10
a
b
d
c
=
10
×
a
×
b
×
d
÷
c
(10)
5
a
b
=
5
×
a
×
b
(11)
6
a
b
=
6
×
a
÷
b
(12)
2
a
b
c
d
=
2
×
a
×
b
×
c
÷
d
(13)
3
a
b
c
=
3
×
a
÷
b
÷
c
(14)
6
a
c
b
=
6
×
a
×
c
÷
b
(15)
a
c
2
b
d
=
a
×
c
÷
2
÷
b
÷
d
(16)
3
a
b
=
3
÷
a
÷
b
(17)
a
b
7
c
d
=
a
×
b
÷
7
÷
c
÷
d
(18)
6
a
b
=
6
×
a
×
b
(19)
10
a
b
c
=
10
×
a
×
b
×
c
(20)
2
a
d
b
c
=
2
×
a
×
d
÷
b
÷
c