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