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▲
©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-20]
(1)
2
5
98
5
2
(
＋
)
7
(2)
2
7
18
7
3
5
(
＋
)
(3)
50
7
2
7
2
5
(
＋
)
(4)
27
5
3
5
(
＋
1
)
(5)
8
3
50
3
1
(
＋
)
2
(6)
3
7
12
7
3
5
(
＋
)
(7)
50
3
1
8
3
(
＋
)
2
(8)
20
7
4
5
7
(
＋
)
7
(9)
8
7
3
7
2
7
(
＋
)
(10)
5
7
5
125
7
(
−
＋
)
8
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
5
98
5
2
(
＋
)
7
2
5
2
5
2
=
(
7
＋
)
7
2
2
2
5
=
7
×
＋
5
7
14
2
10
=
＋
5
35
(2)
2
7
18
7
3
5
(
＋
)
2
7
2
7
3
5
=
(
3
＋
)
2
6
35
=
3
×
＋
7
6
210
=
＋
7
35
(3)
50
7
2
7
2
5
(
＋
)
2
7
2
7
2
5
=
5
(
＋
)
2
1
35
=
5
×
＋
5
×
2
7
10
2
35
=
＋
7
7
(4)
27
5
3
5
(
＋
1
)
3
5
3
5
=
3
(
＋
1
)
3
3
5
=
3
×
＋
3
5
9
3
15
=
＋
5
5
(5)
8
3
50
3
1
(
＋
)
2
2
3
2
3
1
=
2
(
5
＋
)
2
2
2
3
=
10
×
＋
3
20
1
6
=
＋
3
3
(6)
3
7
12
7
3
5
(
＋
)
3
7
3
7
3
5
=
(
2
＋
)
3
1
35
=
2
×
＋
3
7
6
3
35
=
＋
7
35
(7)
50
3
1
8
3
(
＋
)
2
2
3
1
2
3
=
5
(
＋
2
)
2
5
2
3
2
=
＋
10
×
2
3
5
6
20
=
＋
6
3
(8)
20
7
4
5
7
(
＋
)
7
5
7
4
5
7
=
2
(
＋
)
7
8
5
7
5
=
＋
2
×
7
7
8
35
10
=
＋
49
7
(9)
8
7
3
7
2
7
(
＋
)
2
7
3
7
2
7
=
2
(
＋
)
1
6
2
=
2
×
＋
2
×
7
7
2
6
4
=
＋
7
7
(10)
5
7
5
125
7
(
−
＋
)
8
5
7
5
5
7
=
(
−
＋
5
)
8
5
5
7
5
=
−
＋
5
×
8
7
5
35
25
=
−
＋
56
7