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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
7
175
3
(
＋
)
(2)
27
12
5
(
＋
)
(3)
27
3
(
−7
＋
)
(4)
7
7
(
4
＋
)
(5)
20
5
7
(
＋
)
(6)
3
3
5
(
＋
)
(7)
5
3
20
(
＋
)
(8)
75
5
12
(
＋
)
(9)
2
8
(
＋
7
)
(10)
27
27
7
(
＋
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
7
175
3
(
＋
)
7
7
3
=
(
5
＋
)
21
=
5
×
7
＋
21
=
35
＋
(2)
27
12
5
(
＋
)
3
3
5
=
3
(
2
＋
)
15
=
6
×
3
＋
3
15
=
18
＋
3
(3)
27
3
(
−7
＋
)
3
3
=
3
(
−7
＋
)
3
=
−21
＋
3
×
3
3
=
−21
＋
9
(4)
7
7
(
4
＋
)
7
=
4
＋
7
7
=
4
＋
7
(5)
20
5
7
(
＋
)
5
5
7
=
2
(
＋
)
35
=
2
×
5
＋
2
35
=
10
＋
2
(6)
3
3
5
(
＋
)
15
=
3
＋
15
=
3
＋
(7)
5
3
20
(
＋
)
5
3
5
=
(
＋
2
)
15
=
＋
2
×
5
15
=
＋
10
(8)
75
5
12
(
＋
)
3
5
3
=
5
(
＋
2
)
15
=
5
＋
10
×
3
15
=
5
＋
30
(9)
2
8
(
＋
7
)
2
2
=
(
2
＋
7
)
2
=
2
×
2
＋
7
2
=
4
＋
7
(10)
27
27
7
(
＋
)
3
3
7
=
3
(
3
＋
)
21
=
9
×
3
＋
3
21
=
27
＋
3