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©2024 数学クラブ http://sugaku.club/
月 日( )
● 計算しなさい
[1Q3-20]
(1)
50
7
8
7
2
5
(
+
)
(2)
12
5
1
3
5
(
−
+
)
6
(3)
3
5
27
5
5
(
+
)
9
(4)
5
7
45
7
(
−
1
)
(5)
12
5
3
5
1
(
−
)
5
(6)
2
5
3
5
18
5
(
+
)
(7)
50
3
1
98
3
(
+
)
5
(8)
2
5
18
5
3
7
(
+
)
(9)
2
3
3
50
3
(
+
)
8
(10)
45
7
5
7
5
7
(
+
)
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
50
7
8
7
2
5
(
+
)
2
7
2
7
2
5
=
5
(
2
+
)
2
1
35
=
10
×
+
5
×
2
7
20
2
35
=
+
7
7
(2)
12
5
1
3
5
(
−
+
)
6
3
5
1
3
5
=
2
(
−
+
)
6
1
3
5
3
=
−
+
2
×
3
5
1
15
6
=
−
+
15
5
(3)
3
5
27
5
5
(
+
)
9
3
5
3
5
5
=
(
3
+
)
9
3
5
3
5
=
3
×
+
5
9
9
1
15
=
+
5
9
(4)
5
7
45
7
(
−
1
)
5
7
5
7
=
(
3
−
1
)
5
5
7
=
3
×
−
7
15
1
35
=
−
7
7
(5)
12
5
3
5
1
(
−
)
5
3
5
3
5
1
=
2
(
−
)
5
3
2
3
5
=
2
×
−
5
5
6
2
15
=
−
5
25
(6)
2
5
3
5
18
5
(
+
)
2
5
3
5
2
5
=
(
+
3
)
1
6
2
=
+
3
×
5
5
1
6
6
=
+
5
5
(7)
50
3
1
98
3
(
+
)
5
2
3
1
2
3
=
5
(
+
7
)
5
2
3
2
=
+
35
×
3
1
6
70
=
+
3
3
(8)
2
5
18
5
3
7
(
+
)
2
5
2
5
3
7
=
(
3
+
)
2
6
35
=
3
×
+
5
6
210
=
+
5
35
(9)
2
3
3
50
3
(
+
)
8
2
3
3
2
3
=
(
+
5
)
8
3
2
3
2
=
+
5
×
8
3
1
6
10
=
+
8
3
(10)
45
7
5
7
5
7
(
+
)
5
7
5
7
5
7
=
3
(
+
)
5
5
=
3
×
+
3
×
7
7
30
=
7