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©2026 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
7
5
(2)
13
5
(3)
11
3
(4)
7
17
(5)
17
11
(6)
19
11
(7)
3
2
(8)
13
23
(9)
13
3
(10)
2
3
(11)
5
2
(12)
23
7
(13)
3
7
(14)
17
11
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
7
5
7
5
×
35
=
=
5
5
×
5
(2)
13
5
13
5
×
65
=
=
5
5
×
5
(3)
11
3
11
3
×
33
=
=
3
3
×
3
(4)
7
17
7
17
×
119
=
=
17
17
×
17
(5)
17
11
17
11
×
187
=
=
11
11
×
11
(6)
19
11
19
11
×
209
=
=
11
11
×
11
(7)
3
2
3
2
×
6
=
=
2
2
×
2
(8)
13
23
13
23
×
299
=
=
23
23
×
23
(9)
13
3
13
3
×
39
=
=
3
3
×
3
(10)
2
3
2
3
×
6
=
=
3
3
×
3
(11)
5
2
5
2
×
10
=
=
2
2
×
2
(12)
23
7
23
7
×
161
=
=
7
7
×
7
(13)
3
7
3
7
×
21
=
=
7
7
×
7
(14)
17
11
17
11
×
187
=
=
11
11
×
11