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