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©2026 数学クラブ http://sugaku.club/
月 日（ ）
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[1N0-00]
(1)
2
7
×
(2)
7
5
×
(3)
7
3
×
(4)
5
3
×
(5)
5
2
×
(6)
2
2
×
(7)
3
3
×
(8)
2
×
5
(9)
7
3
×
(10)
5
3
×
(11)
7
2
×
(12)
3
×
5
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
7
×
2
=
7
(2)
7
5
×
7
×
5
=
35
=
(3)
7
3
×
7
×
3
=
21
=
(4)
5
3
×
5
×
3
=
15
=
(5)
5
2
×
5
×
2
=
10
=
(6)
2
2
×
2
×
2
=
2
(7)
3
3
×
3
×
3
=
3
(8)
2
×
5
2
=
5
(9)
7
3
×
7
×
3
=
21
=
(10)
5
3
×
5
×
3
=
15
=
(11)
7
2
×
7
×
2
=
14
=
(12)
3
×
5
3
=
5
(1)
2
7
(2)
35
(3)
21
(4)
15
(5)
10
(6)
2
(7)
3
(8)
2
5
(9)
21
(10)
15
(11)
14
(12)
3
5