［文字サイズの変更］
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©2019 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
c
b
(2)
a
8
b
(3)
a
b
c
4
(4)
9
a
b
c
(5)
5
a
c
b
(6)
8
a
b
c
d
(7)
7
a
b
c
(8)
9
a
b
c
(9)
a
b
c
7
(10)
a
b
3
(11)
a
c
7
b
(12)
a
c
5
b
(13)
6
a
b
c
(14)
a
b
9
(15)
a
b
3
c
(16)
6
a
b
(17)
10
a
c
d
b
(18)
6
a
b
c
(19)
7
a
b
(20)
2
a
b
c
d
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
10
a
c
b
=
10
×
a
×
c
÷
b
(2)
a
8
b
=
a
÷
8
÷
b
(3)
a
b
c
4
=
a
×
b
×
c
÷
4
(4)
9
a
b
c
=
9
×
a
×
b
×
c
(5)
5
a
c
b
=
5
×
a
×
c
÷
b
(6)
8
a
b
c
d
=
8
×
a
×
b
×
c
÷
d
(7)
7
a
b
c
=
7
×
a
×
b
÷
c
(8)
9
a
b
c
=
9
×
a
÷
b
÷
c
(9)
a
b
c
7
=
a
×
b
×
c
÷
7
(10)
a
b
3
=
a
×
b
÷
3
(11)
a
c
7
b
=
a
×
c
÷
7
÷
b
(12)
a
c
5
b
=
a
×
c
÷
5
÷
b
(13)
6
a
b
c
=
6
×
a
×
b
×
c
(14)
a
b
9
=
a
×
b
÷
9
(15)
a
b
3
c
=
a
×
b
÷
3
÷
c
(16)
6
a
b
=
6
×
a
÷
b
(17)
10
a
c
d
b
=
10
×
a
×
c
×
d
÷
b
(18)
6
a
b
c
=
6
×
a
×
b
÷
c
(19)
7
a
b
=
7
×
a
÷
b
(20)
2
a
b
c
d
=
2
×
a
×
b
×
c
÷
d