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©2024 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
13
7
(2)
5
11
(3)
23
11
(4)
7
19
(5)
2
11
(6)
23
5
(7)
7
5
(8)
19
23
(9)
2
3
(10)
19
17
(11)
17
23
(12)
3
11
(13)
7
5
(14)
11
3
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
13
7
13
7
×
91
=
=
7
7
×
7
(2)
5
11
5
11
×
55
=
=
11
11
×
11
(3)
23
11
23
11
×
253
=
=
11
11
×
11
(4)
7
19
7
19
×
133
=
=
19
19
×
19
(5)
2
11
2
11
×
22
=
=
11
11
×
11
(6)
23
5
23
5
×
115
=
=
5
5
×
5
(7)
7
5
7
5
×
35
=
=
5
5
×
5
(8)
19
23
19
23
×
437
=
=
23
23
×
23
(9)
2
3
2
3
×
6
=
=
3
3
×
3
(10)
19
17
19
17
×
323
=
=
17
17
×
17
(11)
17
23
17
23
×
391
=
=
23
23
×
23
(12)
3
11
3
11
×
33
=
=
11
11
×
11
(13)
7
5
7
5
×
35
=
=
5
5
×
5
(14)
11
3
11
3
×
33
=
=
3
3
×
3