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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
2
3
50
(
＋
)
(2)
28
7
(
＋
10
)
(3)
2
50
5
(
＋
)
(4)
2
2
(
＋
1
)
(5)
63
28
(
−
8
)
(6)
75
75
7
(
＋
)
(7)
2
7
8
(
＋
)
(8)
45
125
(
−9
＋
)
(9)
12
3
(
−
5
)
(10)
45
5
3
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
3
50
(
＋
)
2
3
2
=
(
＋
5
)
6
=
＋
5
×
2
6
=
＋
10
(2)
28
7
(
＋
10
)
7
7
=
2
(
＋
10
)
7
=
2
×
7
＋
20
7
=
14
＋
20
(3)
2
50
5
(
＋
)
2
2
5
=
(
5
＋
)
10
=
5
×
2
＋
10
=
10
＋
(4)
2
2
(
＋
1
)
2
=
2
＋
2
=
2
＋
(5)
63
28
(
−
8
)
7
7
=
3
(
2
−
8
)
7
=
6
×
7
−
24
7
=
42
−
24
(6)
75
75
7
(
＋
)
3
3
7
=
5
(
5
＋
)
21
=
25
×
3
＋
5
21
=
75
＋
5
(7)
2
7
8
(
＋
)
2
7
2
=
(
＋
2
)
14
=
＋
2
×
2
14
=
＋
4
(8)
45
125
(
−9
＋
)
5
5
=
3
(
−9
＋
5
)
5
=
−27
＋
15
×
5
5
=
−27
＋
75
(9)
12
3
(
−
5
)
3
3
=
2
(
−
5
)
3
=
2
×
3
−
10
3
=
6
−
10
(10)
45
5
3
(
＋
)
5
5
3
=
3
(
＋
)
15
=
3
×
5
＋
3
15
=
15
＋
3