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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
45
7
5
125
7
−
+
3
8
(2)
1
27
7
3
75
7
−
2
5
(3)
27
7
75
7
+
(4)
27
5
147
5
+
(5)
27
5
147
5
−
+
(6)
9
50
3
1
8
3
+
10
4
(7)
12
7
4
27
7
−
7
(8)
125
7
2
20
7
+
3
(9)
8
5
18
5
+
(10)
50
3
8
3
+
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
1
45
7
5
125
7
−
+
3
8
1
5
7
5
5
7
=
−
×
3
+
×
5
3
8
17
5
7
=
8
17
35
=
56
(2)
1
27
7
3
75
7
−
2
5
1
3
7
3
3
7
=
×
3
−
×
5
2
5
3
3
7
=
−
2
3
21
=
−
14
(3)
27
7
75
7
+
3
7
3
7
=
3
+
5
3
7
=
8
8
21
=
7
(4)
27
5
147
5
+
3
5
3
5
=
3
+
7
3
5
=
10
15
=
2
(5)
27
5
147
5
−
+
3
5
3
5
=
−
3
+
7
3
5
=
4
4
15
=
5
(6)
9
50
3
1
8
3
+
10
4
9
2
3
1
2
3
=
×
5
+
×
2
10
4
2
3
=
5
5
6
=
3
(7)
12
7
4
27
7
−
7
3
7
4
3
7
=
2
−
×
3
7
2
3
7
=
7
2
21
=
49
(8)
125
7
2
20
7
+
3
5
7
2
5
7
=
5
+
×
2
3
19
5
7
=
3
19
35
=
21
(9)
8
5
18
5
+
2
5
2
5
=
2
+
3
2
5
=
5
10
=
(10)
50
3
8
3
+
2
3
2
3
=
5
+
2
2
3
=
7
7
6
=
3