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©2026 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q2-00]
(1)
−9
50
+
2
(2)
1
1
+
5
20
(3)
−1
8
+
20
125
(4)
7
7
−
63
(5)
1
1
+
27
27
(6)
1
8
+
27
12
(7)
6
125
+
4
5
(8)
7
9
5
+
7
(9)
−2
4
−
3
27
(10)
20
1
+
5
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−9
50
+
2
9
2
=
−
+
5
2
2
9
2
=
−
+
5
2
1
2
=
2
(2)
1
1
+
5
20
1
1
=
+
5
5
2
5
5
=
+
5
2
×
5
3
5
=
10
(3)
−1
8
+
20
125
1
8
=
−
+
5
2
5
5
5
5
8
=
−
+
2
×
5
5
×
5
11
5
=
50
(4)
7
7
−
63
7
7
=
−
7
3
7
7
7
=
−
3
×
7
2
7
=
3
(5)
1
1
+
27
27
1
1
=
+
3
3
3
3
3
3
=
+
3
×
3
3
×
3
2
3
=
9
(6)
1
8
+
27
12
1
8
=
+
3
3
3
2
3
3
8
=
+
3
×
3
2
×
3
13
3
=
9
(7)
6
125
+
4
5
6
5
=
+
4
×
5
5
5
6
5
=
+
4
×
5
5
106
5
=
5
(8)
7
9
5
+
7
7
7
9
=
5
+
7
44
7
=
7
(9)
−2
4
−
3
27
2
4
=
−
−
3
3
3
3
2
3
4
=
−
−
3
3
×
3
10
3
=
−
9
(10)
20
1
+
5
5
1
=
2
+
5
5
5
=
2
+
5
11
5
=
5