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©2025 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q1-00]
(1)
27
75
−10
+
8
(2)
45
20
−
+
8
(3)
125
20
−2
+
4
(4)
125
125
+
(5)
75
27
+
10
(6)
18
50
−
4
(7)
27
75
+
(8)
50
8
+
(9)
27
12
+
(10)
50
50
−5
+
7
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
27
75
−10
+
8
3
3
=
−10
×
3
+
8
×
5
3
=
10
(2)
45
20
−
+
8
5
5
=
−
3
+
8
×
2
5
=
13
(3)
125
20
−2
+
4
5
5
=
−2
×
5
+
4
×
2
5
=
−2
(4)
125
125
+
5
5
=
5
+
5
5
=
10
(5)
75
27
+
10
3
3
=
5
+
10
×
3
3
=
35
(6)
18
50
−
4
2
2
=
3
−
4
×
5
2
=
−17
(7)
27
75
+
3
3
=
3
+
5
3
=
8
(8)
50
8
+
2
2
=
5
+
2
2
=
7
(9)
27
12
+
3
3
=
3
+
2
3
=
5
(10)
50
50
−5
+
7
2
2
=
−5
×
5
+
7
×
5
2
=
10