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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
125
125
(
−3
＋
)
(2)
50
18
3
(
＋
)
(3)
3
75
(
−
3
)
(4)
7
7
(
−
5
)
(5)
7
28
(
−
2
)
(6)
7
63
5
(
＋
)
(7)
28
28
5
(
＋
)
(8)
3
75
5
(
＋
)
(9)
20
3
5
(
＋
)
(10)
7
63
(
2
＋
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
125
125
(
−3
＋
)
5
5
=
5
(
−3
＋
5
)
5
=
−15
＋
25
×
5
5
=
−15
＋
125
(2)
50
18
3
(
＋
)
2
2
3
=
5
(
3
＋
)
6
=
15
×
2
＋
5
6
=
30
＋
5
(3)
3
75
(
−
3
)
3
3
=
(
5
−
3
)
3
=
5
×
3
−
3
3
=
15
−
3
(4)
7
7
(
−
5
)
7
=
7
−
5
7
=
7
−
5
(5)
7
28
(
−
2
)
7
7
=
(
2
−
2
)
7
=
2
×
7
−
2
7
=
14
−
2
(6)
7
63
5
(
＋
)
7
7
5
=
(
3
＋
)
35
=
3
×
7
＋
35
=
21
＋
(7)
28
28
5
(
＋
)
7
7
5
=
2
(
2
＋
)
35
=
4
×
7
＋
2
35
=
28
＋
2
(8)
3
75
5
(
＋
)
3
3
5
=
(
5
＋
)
15
=
5
×
3
＋
15
=
15
＋
(9)
20
3
5
(
＋
)
5
3
5
=
2
(
＋
)
15
=
2
＋
2
×
5
15
=
2
＋
10
(10)
7
63
(
2
＋
)
7
7
=
(
2
＋
3
)
7
=
2
＋
3
×
7
7
=
2
＋
21