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©2025 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
23
2
(2)
23
3
(3)
5
2
(4)
17
5
(5)
11
2
(6)
19
11
(7)
11
13
(8)
2
23
(9)
3
2
(10)
5
11
(11)
7
2
(12)
5
19
(13)
2
13
(14)
5
2
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
23
2
23
2
×
46
=
=
2
2
×
2
(2)
23
3
23
3
×
69
=
=
3
3
×
3
(3)
5
2
5
2
×
10
=
=
2
2
×
2
(4)
17
5
17
5
×
85
=
=
5
5
×
5
(5)
11
2
11
2
×
22
=
=
2
2
×
2
(6)
19
11
19
11
×
209
=
=
11
11
×
11
(7)
11
13
11
13
×
143
=
=
13
13
×
13
(8)
2
23
2
23
×
46
=
=
23
23
×
23
(9)
3
2
3
2
×
6
=
=
2
2
×
2
(10)
5
11
5
11
×
55
=
=
11
11
×
11
(11)
7
2
7
2
×
14
=
=
2
2
×
2
(12)
5
19
5
19
×
95
=
=
19
19
×
19
(13)
2
13
2
13
×
26
=
=
13
13
×
13
(14)
5
2
5
2
×
10
=
=
2
2
×
2