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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
8
2
(
−7
＋
)
(2)
12
75
(
＋
5
)
(3)
7
7
3
(
＋
)
(4)
5
5
(
−5
＋
)
(5)
7
2
7
(
＋
)
(6)
5
2
5
(
＋
)
(7)
7
3
7
(
＋
)
(8)
3
75
7
(
＋
)
(9)
5
5
(
−
8
)
(10)
3
27
7
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
8
2
(
−7
＋
)
2
2
=
2
(
−7
＋
)
2
=
−14
＋
2
×
2
2
=
−14
＋
4
(2)
12
75
(
＋
5
)
3
3
=
2
(
5
＋
5
)
3
=
10
×
3
＋
10
3
=
30
＋
10
(3)
7
7
3
(
＋
)
21
=
7
＋
21
=
7
＋
(4)
5
5
(
−5
＋
)
5
=
−5
＋
5
5
=
−5
＋
5
(5)
7
2
7
(
＋
)
14
=
＋
7
14
=
＋
7
(6)
5
2
5
(
＋
)
10
=
＋
5
10
=
＋
5
(7)
7
3
7
(
＋
)
21
=
＋
7
21
=
＋
7
(8)
3
75
7
(
＋
)
3
3
7
=
(
5
＋
)
21
=
5
×
3
＋
21
=
15
＋
(9)
5
5
(
−
8
)
5
=
5
−
8
5
=
5
−
8
(10)
3
27
7
(
＋
)
3
3
7
=
(
3
＋
)
21
=
3
×
3
＋
21
=
9
＋