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©2026 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
3
5
(2)
19
23
(3)
11
7
(4)
13
3
(5)
11
17
(6)
7
3
(7)
7
3
(8)
3
23
(9)
17
5
(10)
7
13
(11)
11
5
(12)
2
5
(13)
3
2
(14)
5
17
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
5
3
5
×
15
=
=
5
5
×
5
(2)
19
23
19
23
×
437
=
=
23
23
×
23
(3)
11
7
11
7
×
77
=
=
7
7
×
7
(4)
13
3
13
3
×
39
=
=
3
3
×
3
(5)
11
17
11
17
×
187
=
=
17
17
×
17
(6)
7
3
7
3
×
21
=
=
3
3
×
3
(7)
7
3
7
3
×
21
=
=
3
3
×
3
(8)
3
23
3
23
×
69
=
=
23
23
×
23
(9)
17
5
17
5
×
85
=
=
5
5
×
5
(10)
7
13
7
13
×
91
=
=
13
13
×
13
(11)
11
5
11
5
×
55
=
=
5
5
×
5
(12)
2
5
2
5
×
10
=
=
5
5
×
5
(13)
3
2
3
2
×
6
=
=
2
2
×
2
(14)
5
17
5
17
×
85
=
=
17
17
×
17