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©2025 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q1-20]
(1)
1
12
7
1
27
7
−
−
6
2
(2)
27
5
12
5
+
(3)
1
75
7
1
27
7
−
9
3
(4)
8
5
18
5
−
+
(5)
12
7
27
7
+
(6)
50
3
8
3
+
(7)
18
7
8
7
+
(8)
50
3
8
3
+
(9)
3
45
7
7
125
7
−
−
4
9
(10)
27
5
12
5
+
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
1
12
7
1
27
7
−
−
6
2
1
3
7
1
3
7
=
−
×
2
−
×
3
6
2
11
3
7
=
−
6
11
21
=
−
42
(2)
27
5
12
5
+
3
5
3
5
=
3
+
2
3
5
=
5
15
=
(3)
1
75
7
1
27
7
−
9
3
1
3
7
1
3
7
=
×
5
−
×
3
9
3
4
3
7
=
−
9
4
21
=
−
63
(4)
8
5
18
5
−
+
2
5
2
5
=
−
2
+
3
2
5
=
1
10
=
5
(5)
12
7
27
7
+
3
7
3
7
=
2
+
3
3
7
=
5
5
21
=
7
(6)
50
3
8
3
+
2
3
2
3
=
5
+
2
2
3
=
7
7
6
=
3
(7)
18
7
8
7
+
2
7
2
7
=
3
+
2
2
7
=
5
5
14
=
7
(8)
50
3
8
3
+
2
3
2
3
=
5
+
2
2
3
=
7
7
6
=
3
(9)
3
45
7
7
125
7
−
−
4
9
3
5
7
7
5
7
=
−
×
3
−
×
5
4
9
221
5
7
=
−
36
221
35
=
−
252
(10)
27
5
12
5
+
3
5
3
5
=
3
+
2
3
5
=
5
15
=