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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-20]
(1)
3
7
27
7
2
5
(
＋
)
(2)
18
5
98
5
(
−1
＋
)
(3)
2
3
50
3
2
3
(
＋
)
(4)
3
5
27
5
2
(
＋
)
3
(5)
3
5
7
12
5
(
＋
)
9
(6)
18
5
3
7
2
5
(
＋
)
(7)
50
7
2
7
(
＋
1
)
(8)
75
7
3
7
3
7
(
＋
)
(9)
18
7
1
2
7
(
＋
)
8
(10)
5
7
2
45
7
(
＋
)
3
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
7
27
7
2
5
(
＋
)
3
7
3
7
2
5
=
(
3
＋
)
3
6
35
=
3
×
＋
7
9
210
=
＋
7
35
(2)
18
5
98
5
(
−1
＋
)
2
5
2
5
=
3
(
−1
＋
7
)
2
5
2
=
−3
＋
21
×
5
3
10
42
=
−
＋
5
5
(3)
2
3
50
3
2
3
(
＋
)
2
3
2
3
2
3
=
(
5
＋
)
2
2
=
5
×
＋
3
3
=
4
(4)
3
5
27
5
2
(
＋
)
3
3
5
3
5
2
=
(
3
＋
)
3
3
2
3
5
=
3
×
＋
5
3
9
2
15
=
＋
5
15
(5)
3
5
7
12
5
(
＋
)
9
3
5
7
3
5
=
(
＋
2
)
9
7
3
5
3
=
＋
2
×
9
5
7
15
6
=
＋
45
5
(6)
18
5
3
7
2
5
(
＋
)
2
5
3
7
2
5
=
3
(
＋
)
6
35
2
=
3
＋
3
×
5
3
210
6
=
＋
35
5
(7)
50
7
2
7
(
＋
1
)
2
7
2
7
=
5
(
＋
1
)
2
2
7
=
5
×
＋
5
7
10
5
14
=
＋
7
7
(8)
75
7
3
7
3
7
(
＋
)
3
7
3
7
3
7
=
5
(
＋
)
3
3
=
5
×
＋
5
×
7
7
30
=
7
(9)
18
7
1
2
7
(
＋
)
8
2
7
1
2
7
=
3
(
＋
)
8
3
2
7
2
=
＋
3
×
8
7
3
14
6
=
＋
56
7
(10)
5
7
2
45
7
(
＋
)
3
5
7
2
5
7
=
(
＋
3
)
3
2
5
7
5
=
＋
3
×
3
7
2
35
15
=
＋
21
7