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