[文字サイズの変更]
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● √
の中をできるだけ簡単な数にしなさい
[1N3-00]
(1)
125
(2)
175
(3)
125
(4)
125
(5)
18
(6)
48
(7)
300
(8)
80
(9)
8
(10)
112
(11)
252
(12)
343
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
125
2
5
×
5
5
=
=
5
(2)
175
2
5
×
7
7
=
=
5
(3)
125
2
5
×
5
5
=
=
5
(4)
125
2
5
×
5
5
=
=
5
(5)
18
2
3
×
2
2
=
=
3
(6)
48
2
4
×
3
3
=
=
4
(7)
300
2
10
×
3
3
=
=
10
(8)
80
2
4
×
5
5
=
=
4
(9)
8
2
2
×
2
2
=
=
2
(10)
112
2
4
×
7
7
=
=
4
(11)
252
2
6
×
7
7
=
=
6
(12)
343
2
7
×
7
7
=
=
7
(1)
5
5
(2)
7
5
(3)
5
5
(4)
5
5
(5)
2
3
(6)
3
4
(7)
3
10
(8)
5
4
(9)
2
2
(10)
7
4
(11)
7
6
(12)
7
7