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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
20
5
7
(
＋
)
(2)
175
7
(
＋
8
)
(3)
2
2
(
−
3
)
(4)
18
2
7
(
＋
)
(5)
3
27
(
6
＋
)
(6)
50
2
(
＋
4
)
(7)
27
75
7
(
＋
)
(8)
20
20
3
(
＋
)
(9)
5
20
(
＋
1
)
(10)
7
7
7
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
20
5
7
(
＋
)
5
5
7
=
2
(
＋
)
35
=
2
×
5
＋
2
35
=
10
＋
2
(2)
175
7
(
＋
8
)
7
7
=
5
(
＋
8
)
7
=
5
×
7
＋
40
7
=
35
＋
40
(3)
2
2
(
−
3
)
2
=
2
−
3
2
=
2
−
3
(4)
18
2
7
(
＋
)
2
2
7
=
3
(
＋
)
14
=
3
×
2
＋
3
14
=
6
＋
3
(5)
3
27
(
6
＋
)
3
3
=
(
6
＋
3
)
3
=
6
＋
3
×
3
3
=
6
＋
9
(6)
50
2
(
＋
4
)
2
2
=
5
(
＋
4
)
2
=
5
×
2
＋
20
2
=
10
＋
20
(7)
27
75
7
(
＋
)
3
3
7
=
3
(
5
＋
)
21
=
15
×
3
＋
3
21
=
45
＋
3
(8)
20
20
3
(
＋
)
5
5
3
=
2
(
2
＋
)
15
=
4
×
5
＋
2
15
=
20
＋
2
(9)
5
20
(
＋
1
)
5
5
=
(
2
＋
1
)
5
=
2
×
5
＋
5
=
10
＋
(10)
7
7
7
(
＋
)
=
7
＋
7
=
14