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▲
©2025 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q1-00]
(1)
28
63
−
+
(2)
50
50
10
+
(3)
18
18
−2
+
9
(4)
175
175
−8
+
(5)
20
125
−
(6)
175
175
+
(7)
63
63
2
+
(8)
50
18
−5
+
(9)
27
75
−
9
(10)
27
27
+
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
28
63
−
+
7
7
=
−
2
+
3
7
=
(2)
50
50
10
+
2
2
=
10
×
5
+
5
2
=
55
(3)
18
18
−2
+
9
2
2
=
−2
×
3
+
9
×
3
2
=
21
(4)
175
175
−8
+
7
7
=
−8
×
5
+
5
7
=
−35
(5)
20
125
−
5
5
=
2
−
5
5
=
−3
(6)
175
175
+
7
7
=
5
+
5
7
=
10
(7)
63
63
2
+
7
7
=
2
×
3
+
3
7
=
9
(8)
50
18
−5
+
2
2
=
−5
×
5
+
3
2
=
−22
(9)
27
75
−
9
3
3
=
3
−
9
×
5
3
=
−42
(10)
27
27
+
3
3
=
3
+
3
3
=
6