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©2025 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
5
17
(2)
5
3
(3)
5
17
(4)
19
23
(5)
19
5
(6)
23
5
(7)
5
19
(8)
2
5
(9)
5
7
(10)
19
3
(11)
23
5
(12)
23
17
(13)
5
11
(14)
19
2
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
5
17
5
17
×
85
=
=
17
17
×
17
(2)
5
3
5
3
×
15
=
=
3
3
×
3
(3)
5
17
5
17
×
85
=
=
17
17
×
17
(4)
19
23
19
23
×
437
=
=
23
23
×
23
(5)
19
5
19
5
×
95
=
=
5
5
×
5
(6)
23
5
23
5
×
115
=
=
5
5
×
5
(7)
5
19
5
19
×
95
=
=
19
19
×
19
(8)
2
5
2
5
×
10
=
=
5
5
×
5
(9)
5
7
5
7
×
35
=
=
7
7
×
7
(10)
19
3
19
3
×
57
=
=
3
3
×
3
(11)
23
5
23
5
×
115
=
=
5
5
×
5
(12)
23
17
23
17
×
391
=
=
17
17
×
17
(13)
5
11
5
11
×
55
=
=
11
11
×
11
(14)
19
2
19
2
×
38
=
=
2
2
×
2