［文字サイズの変更］
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©2024 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)
3
a
b
(2)
2
a
b
c
d
(3)
2
a
b
c
(4)
9
a
b
d
c
(5)
6
b
a
c
(6)
a
2
b
(7)
a
c
3
b
(8)
2
a
b
(9)
5
a
b
(10)
7
a
b
c
(11)
3
a
b
(12)
3
b
a
(13)
a
b
5
(14)
a
d
7
b
c
(15)
8
a
b
c
(16)
6
a
b
c
d
(17)
4
a
b
(18)
2
a
c
b
d
(19)
5
a
b
(20)
a
b
c
d
10
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
a
b
=
3
×
a
×
b
(2)
2
a
b
c
d
=
2
×
a
÷
b
÷
c
÷
d
(3)
2
a
b
c
=
2
×
a
×
b
÷
c
(4)
9
a
b
d
c
=
9
×
a
×
b
×
d
÷
c
(5)
6
b
a
c
=
6
×
b
÷
a
÷
c
(6)
a
2
b
=
a
÷
2
÷
b
(7)
a
c
3
b
=
a
×
c
÷
3
÷
b
(8)
2
a
b
=
2
×
a
÷
b
(9)
5
a
b
=
5
×
a
×
b
(10)
7
a
b
c
=
7
×
a
×
b
×
c
(11)
3
a
b
=
3
×
a
×
b
(12)
3
b
a
=
3
×
b
÷
a
(13)
a
b
5
=
a
×
b
÷
5
(14)
a
d
7
b
c
=
a
×
d
÷
7
÷
b
÷
c
(15)
8
a
b
c
=
8
×
a
×
b
÷
c
(16)
6
a
b
c
d
=
6
×
a
×
b
×
c
÷
d
(17)
4
a
b
=
4
×
a
÷
b
(18)
2
a
c
b
d
=
2
×
a
×
c
÷
b
÷
d
(19)
5
a
b
=
5
×
a
÷
b
(20)
a
b
c
d
10
=
a
×
b
×
c
×
d
÷
10