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©2026 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
11
7
(2)
3
5
(3)
19
3
(4)
5
17
(5)
23
3
(6)
5
3
(7)
19
13
(8)
23
3
(9)
2
3
(10)
13
23
(11)
3
7
(12)
7
5
(13)
5
13
(14)
19
3
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
11
7
11
7
×
77
=
=
7
7
×
7
(2)
3
5
3
5
×
15
=
=
5
5
×
5
(3)
19
3
19
3
×
57
=
=
3
3
×
3
(4)
5
17
5
17
×
85
=
=
17
17
×
17
(5)
23
3
23
3
×
69
=
=
3
3
×
3
(6)
5
3
5
3
×
15
=
=
3
3
×
3
(7)
19
13
19
13
×
247
=
=
13
13
×
13
(8)
23
3
23
3
×
69
=
=
3
3
×
3
(9)
2
3
2
3
×
6
=
=
3
3
×
3
(10)
13
23
13
23
×
299
=
=
23
23
×
23
(11)
3
7
3
7
×
21
=
=
7
7
×
7
(12)
7
5
7
5
×
35
=
=
5
5
×
5
(13)
5
13
5
13
×
65
=
=
13
13
×
13
(14)
19
3
19
3
×
57
=
=
3
3
×
3