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©2018 数学クラブ http://sugaku.club/
月 日（ ）
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[1P1-00]
(1)
13
7
(2)
19
5
(3)
19
11
(4)
2
19
(5)
11
7
(6)
7
3
(7)
7
2
(8)
23
17
(9)
2
5
(10)
19
13
(11)
7
11
(12)
5
23
(13)
7
11
(14)
11
2
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
13
7
13
7
×
91
=
=
7
7
×
7
(2)
19
5
19
5
×
95
=
=
5
5
×
5
(3)
19
11
19
11
×
209
=
=
11
11
×
11
(4)
2
19
2
19
×
38
=
=
19
19
×
19
(5)
11
7
11
7
×
77
=
=
7
7
×
7
(6)
7
3
7
3
×
21
=
=
3
3
×
3
(7)
7
2
7
2
×
14
=
=
2
2
×
2
(8)
23
17
23
17
×
391
=
=
17
17
×
17
(9)
2
5
2
5
×
10
=
=
5
5
×
5
(10)
19
13
19
13
×
247
=
=
13
13
×
13
(11)
7
11
7
11
×
77
=
=
11
11
×
11
(12)
5
23
5
23
×
115
=
=
23
23
×
23
(13)
7
11
7
11
×
77
=
=
11
11
×
11
(14)
11
2
11
2
×
22
=
=
2
2
×
2