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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
50
3
98
3
−
8
(2)
20
7
45
7
+
(3)
8
3
1
50
3
+
4
(4)
27
5
12
5
+
(5)
2
18
7
50
7
−
+
3
(6)
50
7
8
7
+
(7)
3
8
3
1
50
3
−
+
5
2
(8)
20
7
1
45
7
−
2
(9)
125
7
20
7
+
(10)
18
7
3
8
7
−
5
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
1
50
3
98
3
−
8
1
2
3
2
3
=
×
5
−
7
8
51
2
3
=
−
8
17
6
=
−
8
(2)
20
7
45
7
+
5
7
5
7
=
2
+
3
5
7
=
5
5
35
=
7
(3)
8
3
1
50
3
+
4
2
3
1
2
3
=
2
+
×
5
4
13
2
3
=
4
13
6
=
12
(4)
27
5
12
5
+
3
5
3
5
=
3
+
2
3
5
=
5
15
=
(5)
2
18
7
50
7
−
+
3
2
2
7
2
7
=
−
×
3
+
5
3
2
7
=
3
3
14
=
7
(6)
50
7
8
7
+
2
7
2
7
=
5
+
2
2
7
=
7
14
=
(7)
3
8
3
1
50
3
−
+
5
2
3
2
3
1
2
3
=
−
×
2
+
×
5
5
2
13
2
3
=
10
13
6
=
30
(8)
20
7
1
45
7
−
2
5
7
1
5
7
=
2
−
×
3
2
1
5
7
=
2
1
35
=
14
(9)
125
7
20
7
+
5
7
5
7
=
5
+
2
5
7
=
7
35
=
(10)
18
7
3
8
7
−
5
2
7
3
2
7
=
3
−
×
2
5
9
2
7
=
5
9
14
=
35