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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
5
5
3
(
＋
)
(2)
63
2
7
(
＋
)
(3)
3
3
(
−
7
)
(4)
3
75
7
(
＋
)
(5)
125
5
(
＋
4
)
(6)
7
7
(
−2
＋
)
(7)
2
5
50
(
＋
)
(8)
2
50
(
＋
8
)
(9)
28
5
28
(
＋
)
(10)
45
5
2
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
5
5
3
(
＋
)
15
=
5
＋
15
=
5
＋
(2)
63
2
7
(
＋
)
7
2
7
=
3
(
＋
)
14
=
3
＋
3
×
7
14
=
3
＋
21
(3)
3
3
(
−
7
)
3
=
3
−
7
3
=
3
−
7
(4)
3
75
7
(
＋
)
3
3
7
=
(
5
＋
)
21
=
5
×
3
＋
21
=
15
＋
(5)
125
5
(
＋
4
)
5
5
=
5
(
＋
4
)
5
=
5
×
5
＋
20
5
=
25
＋
20
(6)
7
7
(
−2
＋
)
7
=
−2
＋
7
7
=
−2
＋
7
(7)
2
5
50
(
＋
)
2
5
2
=
(
＋
5
)
10
=
＋
5
×
2
10
=
＋
10
(8)
2
50
(
＋
8
)
2
2
=
(
5
＋
8
)
2
=
5
×
2
＋
8
2
=
10
＋
8
(9)
28
5
28
(
＋
)
7
5
7
=
2
(
＋
2
)
35
=
2
＋
4
×
7
35
=
2
＋
28
(10)
45
5
2
(
＋
)
5
5
2
=
3
(
＋
)
10
=
3
×
5
＋
3
10
=
15
＋
3