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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-20]
(1)
18
7
2
5
8
7
(
＋
)
(2)
27
5
1
3
5
(
＋
)
2
(3)
125
7
5
7
(
＋
1
)
(4)
12
7
4
3
7
(
−
＋
)
5
(5)
8
3
2
3
(
1
＋
)
(6)
8
7
5
7
2
7
(
＋
)
(7)
27
5
3
5
(
−
1
)
(8)
8
3
50
3
8
(
−
)
9
(9)
3
7
2
7
75
7
(
＋
)
(10)
2
3
50
3
3
(
＋
)
5
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
18
7
2
5
8
7
(
＋
)
2
7
2
5
2
7
=
3
(
＋
2
)
1
35
2
=
3
×
2
＋
6
×
7
6
35
12
=
＋
35
7
(2)
27
5
1
3
5
(
＋
)
2
3
5
1
3
5
=
3
(
＋
)
2
3
3
5
3
=
＋
3
×
2
5
3
15
9
=
＋
10
5
(3)
125
7
5
7
(
＋
1
)
5
7
5
7
=
5
(
＋
1
)
5
5
7
=
5
×
＋
5
7
25
5
35
=
＋
7
7
(4)
12
7
4
3
7
(
−
＋
)
5
3
7
4
3
7
=
2
(
−
＋
)
5
8
3
7
3
=
−
＋
2
×
5
7
8
21
6
=
−
＋
35
7
(5)
8
3
2
3
(
1
＋
)
2
3
2
3
=
2
(
1
＋
)
2
3
2
=
2
＋
2
×
3
2
6
4
=
＋
3
3
(6)
8
7
5
7
2
7
(
＋
)
2
7
5
7
2
7
=
2
(
＋
)
1
10
2
=
2
×
＋
2
×
7
7
2
10
4
=
＋
7
7
(7)
27
5
3
5
(
−
1
)
3
5
3
5
=
3
(
−
1
)
3
3
5
=
3
×
−
3
5
9
3
15
=
−
5
5
(8)
8
3
50
3
8
(
−
)
9
2
3
2
3
8
=
2
(
5
−
)
9
2
16
2
3
=
10
×
−
3
9
20
16
6
=
−
3
27
(9)
3
7
2
7
75
7
(
＋
)
3
7
2
7
3
7
=
(
＋
5
)
1
6
3
=
＋
5
×
7
7
1
6
15
=
＋
7
7
(10)
2
3
50
3
3
(
＋
)
5
2
3
2
3
3
=
(
5
＋
)
5
2
3
2
3
=
5
×
＋
3
5
10
1
6
=
＋
3
5