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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
27
75
7
(
＋
)
(2)
28
3
175
(
＋
)
(3)
50
2
2
(
＋
)
(4)
7
175
(
＋
1
)
(5)
27
12
(
＋
7
)
(6)
45
125
(
−10
＋
)
(7)
18
8
(
9
＋
)
(8)
63
7
3
(
＋
)
(9)
5
125
(
−
10
)
(10)
3
2
3
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
27
75
7
(
＋
)
3
3
7
=
3
(
5
＋
)
21
=
15
×
3
＋
3
21
=
45
＋
3
(2)
28
3
175
(
＋
)
7
3
7
=
2
(
＋
5
)
21
=
2
＋
10
×
7
21
=
2
＋
70
(3)
50
2
2
(
＋
)
2
2
2
=
5
(
＋
)
=
5
×
2
＋
5
×
2
=
20
(4)
7
175
(
＋
1
)
7
7
=
(
5
＋
1
)
7
=
5
×
7
＋
7
=
35
＋
(5)
27
12
(
＋
7
)
3
3
=
3
(
2
＋
7
)
3
=
6
×
3
＋
21
3
=
18
＋
21
(6)
45
125
(
−10
＋
)
5
5
=
3
(
−10
＋
5
)
5
=
−30
＋
15
×
5
5
=
−30
＋
75
(7)
18
8
(
9
＋
)
2
2
=
3
(
9
＋
2
)
2
=
27
＋
6
×
2
2
=
27
＋
12
(8)
63
7
3
(
＋
)
7
7
3
=
3
(
＋
)
21
=
3
×
7
＋
3
21
=
21
＋
3
(9)
5
125
(
−
10
)
5
5
=
(
5
−
10
)
5
=
5
×
5
−
10
5
=
25
−
10
(10)
3
2
3
(
＋
)
6
=
＋
3
6
=
＋
3