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©2024 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
19
3
(2)
13
17
(3)
13
17
(4)
19
5
(5)
23
7
(6)
13
23
(7)
7
13
(8)
19
2
(9)
17
19
(10)
13
2
(11)
5
11
(12)
13
7
(13)
13
17
(14)
19
13
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
19
3
19
3
×
57
=
=
3
3
×
3
(2)
13
17
13
17
×
221
=
=
17
17
×
17
(3)
13
17
13
17
×
221
=
=
17
17
×
17
(4)
19
5
19
5
×
95
=
=
5
5
×
5
(5)
23
7
23
7
×
161
=
=
7
7
×
7
(6)
13
23
13
23
×
299
=
=
23
23
×
23
(7)
7
13
7
13
×
91
=
=
13
13
×
13
(8)
19
2
19
2
×
38
=
=
2
2
×
2
(9)
17
19
17
19
×
323
=
=
19
19
×
19
(10)
13
2
13
2
×
26
=
=
2
2
×
2
(11)
5
11
5
11
×
55
=
=
11
11
×
11
(12)
13
7
13
7
×
91
=
=
7
7
×
7
(13)
13
17
13
17
×
221
=
=
17
17
×
17
(14)
19
13
19
13
×
247
=
=
13
13
×
13