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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
7
2
7
(
＋
)
(2)
8
5
2
(
＋
)
(3)
175
7
(
−5
＋
)
(4)
27
7
3
(
＋
)
(5)
63
7
7
(
＋
)
(6)
3
12
(
−3
＋
)
(7)
7
7
2
(
＋
)
(8)
7
2
7
(
＋
)
(9)
20
3
5
(
＋
)
(10)
2
7
50
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
7
2
7
(
＋
)
14
=
＋
7
14
=
＋
7
(2)
8
5
2
(
＋
)
2
5
2
=
2
(
＋
)
10
=
2
＋
2
×
2
10
=
2
＋
4
(3)
175
7
(
−5
＋
)
7
7
=
5
(
−5
＋
)
7
=
−25
＋
5
×
7
7
=
−25
＋
35
(4)
27
7
3
(
＋
)
3
7
3
=
3
(
＋
)
21
=
3
＋
3
×
3
21
=
3
＋
9
(5)
63
7
7
(
＋
)
7
7
7
=
3
(
＋
)
=
3
×
7
＋
3
×
7
=
42
(6)
3
12
(
−3
＋
)
3
3
=
(
−3
＋
2
)
3
=
−3
＋
2
×
3
3
=
−3
＋
6
(7)
7
7
2
(
＋
)
14
=
7
＋
14
=
7
＋
(8)
7
2
7
(
＋
)
14
=
＋
7
14
=
＋
7
(9)
20
3
5
(
＋
)
5
3
5
=
2
(
＋
)
15
=
2
＋
2
×
5
15
=
2
＋
10
(10)
2
7
50
(
＋
)
2
7
2
=
(
＋
5
)
14
=
＋
5
×
2
14
=
＋
10