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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
8
2
3
(
＋
)
(2)
2
2
7
(
＋
)
(3)
18
2
(
＋
5
)
(4)
18
5
50
(
＋
)
(5)
28
5
7
(
＋
)
(6)
28
3
7
(
＋
)
(7)
63
7
7
(
＋
)
(8)
18
3
2
(
＋
)
(9)
2
2
(
−3
＋
)
(10)
28
7
2
(
＋
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
8
2
3
(
＋
)
2
2
3
=
2
(
＋
)
6
=
2
×
2
＋
2
6
=
4
＋
2
(2)
2
2
7
(
＋
)
14
=
2
＋
14
=
2
＋
(3)
18
2
(
＋
5
)
2
2
=
3
(
＋
5
)
2
=
3
×
2
＋
15
2
=
6
＋
15
(4)
18
5
50
(
＋
)
2
5
2
=
3
(
＋
5
)
10
=
3
＋
15
×
2
10
=
3
＋
30
(5)
28
5
7
(
＋
)
7
5
7
=
2
(
＋
)
35
=
2
＋
2
×
7
35
=
2
＋
14
(6)
28
3
7
(
＋
)
7
3
7
=
2
(
＋
)
21
=
2
＋
2
×
7
21
=
2
＋
14
(7)
63
7
7
(
＋
)
7
7
7
=
3
(
＋
)
=
3
×
7
＋
3
×
7
=
42
(8)
18
3
2
(
＋
)
2
3
2
=
3
(
＋
)
6
=
3
＋
3
×
2
6
=
3
＋
6
(9)
2
2
(
−3
＋
)
2
=
−3
＋
2
2
=
−3
＋
2
(10)
28
7
2
(
＋
)
7
7
2
=
2
(
＋
)
14
=
2
×
7
＋
2
14
=
14
＋
2