［文字サイズの変更］
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
75
3
7
(
＋
)
(2)
7
175
(
−6
＋
)
(3)
12
27
(
＋
7
)
(4)
5
7
125
(
＋
)
(5)
5
125
(
−7
＋
)
(6)
125
5
20
(
＋
)
(7)
2
8
(
＋
1
)
(8)
175
63
(
＋
4
)
(9)
2
50
(
−
4
)
(10)
28
7
(
6
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
75
3
7
(
＋
)
3
3
7
=
5
(
＋
)
21
=
5
×
3
＋
5
21
=
15
＋
5
(2)
7
175
(
−6
＋
)
7
7
=
(
−6
＋
5
)
7
=
−6
＋
5
×
7
7
=
−6
＋
35
(3)
12
27
(
＋
7
)
3
3
=
2
(
3
＋
7
)
3
=
6
×
3
＋
14
3
=
18
＋
14
(4)
5
7
125
(
＋
)
5
7
5
=
(
＋
5
)
35
=
＋
5
×
5
35
=
＋
25
(5)
5
125
(
−7
＋
)
5
5
=
(
−7
＋
5
)
5
=
−7
＋
5
×
5
5
=
−7
＋
25
(6)
125
5
20
(
＋
)
5
5
5
=
5
(
＋
2
)
=
5
×
5
＋
10
×
5
=
75
(7)
2
8
(
＋
1
)
2
2
=
(
2
＋
1
)
2
=
2
×
2
＋
2
=
4
＋
(8)
175
63
(
＋
4
)
7
7
=
5
(
3
＋
4
)
7
=
15
×
7
＋
20
7
=
105
＋
20
(9)
2
50
(
−
4
)
2
2
=
(
5
−
4
)
2
=
5
×
2
−
4
2
=
10
−
4
(10)
28
7
(
6
＋
)
7
7
=
2
(
6
＋
)
7
=
12
＋
2
×
7
7
=
12
＋
14