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©2026 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q1-20]
(1)
2
27
5
1
147
5
−
3
2
(2)
3
8
7
5
18
7
−
+
5
9
(3)
2
27
5
12
5
+
5
(4)
75
7
12
7
+
(5)
8
7
2
50
7
−
+
5
(6)
8
7
5
18
7
−
6
(7)
8
3
1
50
3
+
2
(8)
125
7
45
7
+
(9)
18
7
50
7
+
(10)
8
12
5
1
147
5
−
9
3
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
27
5
1
147
5
−
3
2
2
3
5
1
3
5
=
×
3
−
×
7
3
2
3
3
5
=
−
2
3
15
=
−
10
(2)
3
8
7
5
18
7
−
+
5
9
3
2
7
5
2
7
=
−
×
2
+
×
3
5
9
7
2
7
=
15
1
14
=
15
(3)
2
27
5
12
5
+
5
2
3
5
3
5
=
×
3
+
2
5
16
3
5
=
5
16
15
=
25
(4)
75
7
12
7
+
3
7
3
7
=
5
+
2
3
7
=
7
21
=
(5)
8
7
2
50
7
−
+
5
2
7
2
2
7
=
−
2
+
×
5
5
=
0
(6)
8
7
5
18
7
−
6
2
7
5
2
7
=
2
−
×
3
6
1
2
7
=
−
2
1
14
=
−
14
(7)
8
3
1
50
3
+
2
2
3
1
2
3
=
2
+
×
5
2
9
2
3
=
2
3
6
=
2
(8)
125
7
45
7
+
5
7
5
7
=
5
+
3
5
7
=
8
8
35
=
7
(9)
18
7
50
7
+
2
7
2
7
=
3
+
5
2
7
=
8
8
14
=
7
(10)
8
12
5
1
147
5
−
9
3
8
3
5
1
3
5
=
×
2
−
×
7
9
3
5
3
5
=
−
9
1
15
=
−
9