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©2024 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)
28
(2)
12
(3)
200
(4)
300
(5)
192
(6)
72
(7)
175
(8)
192
(9)
245
(10)
243
(11)
500
(12)
50
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
28
2
2
×
7
7
=
=
2
(2)
12
2
2
×
3
3
=
=
2
(3)
200
2
10
×
2
2
=
=
10
(4)
300
2
10
×
3
3
=
=
10
(5)
192
2
8
×
3
3
=
=
8
(6)
72
2
6
×
2
2
=
=
6
(7)
175
2
5
×
7
7
=
=
5
(8)
192
2
8
×
3
3
=
=
8
(9)
245
2
7
×
5
5
=
=
7
(10)
243
2
9
×
3
3
=
=
9
(11)
500
2
10
×
5
5
=
=
10
(12)
50
2
5
×
2
2
=
=
5
(1)
7
2
(2)
3
2
(3)
2
10
(4)
3
10
(5)
3
8
(6)
2
6
(7)
7
5
(8)
3
8
(9)
5
7
(10)
3
9
(11)
5
10
(12)
2
5