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©2025 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q1-20]
(1)
45
7
1
125
7
+
2
(2)
27
5
12
5
−
+
(3)
12
5
1
27
5
−
−
2
(4)
18
5
98
5
−
+
(5)
5
8
3
50
3
+
8
(6)
12
7
3
75
7
−
10
(7)
27
5
12
5
+
(8)
8
3
50
3
+
(9)
4
45
7
5
125
7
−
+
5
8
(10)
8
7
18
7
+
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
45
7
1
125
7
+
2
5
7
1
5
7
=
3
+
×
5
2
11
5
7
=
2
11
35
=
14
(2)
27
5
12
5
−
+
3
5
3
5
=
−
3
+
2
3
5
=
−
1
15
=
−
5
(3)
12
5
1
27
5
−
−
2
3
5
1
3
5
=
−
2
−
×
3
2
7
3
5
=
−
2
7
15
=
−
10
(4)
18
5
98
5
−
+
2
5
2
5
=
−
3
+
7
2
5
=
4
4
10
=
5
(5)
5
8
3
50
3
+
8
5
2
3
2
3
=
×
2
+
5
8
25
2
3
=
4
25
6
=
12
(6)
12
7
3
75
7
−
10
3
7
3
3
7
=
2
−
×
5
10
1
3
7
=
2
1
21
=
14
(7)
27
5
12
5
+
3
5
3
5
=
3
+
2
3
5
=
5
15
=
(8)
8
3
50
3
+
2
3
2
3
=
2
+
5
2
3
=
7
7
6
=
3
(9)
4
45
7
5
125
7
−
+
5
8
4
5
7
5
5
7
=
−
×
3
+
×
5
5
8
29
5
7
=
40
29
35
=
280
(10)
8
7
18
7
+
2
7
2
7
=
2
+
3
2
7
=
5
5
14
=
7