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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
2
8
(
10
＋
)
(2)
20
125
(
3
＋
)
(3)
3
5
27
(
＋
)
(4)
63
5
7
(
＋
)
(5)
7
175
(
−
9
)
(6)
28
7
7
(
＋
)
(7)
7
63
(
6
＋
)
(8)
175
7
(
＋
8
)
(9)
125
125
(
9
＋
)
(10)
7
7
(
＋
1
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
8
(
10
＋
)
2
2
=
(
10
＋
2
)
2
=
10
＋
2
×
2
2
=
10
＋
4
(2)
20
125
(
3
＋
)
5
5
=
2
(
3
＋
5
)
5
=
6
＋
10
×
5
5
=
6
＋
50
(3)
3
5
27
(
＋
)
3
5
3
=
(
＋
3
)
15
=
＋
3
×
3
15
=
＋
9
(4)
63
5
7
(
＋
)
7
5
7
=
3
(
＋
)
35
=
3
＋
3
×
7
35
=
3
＋
21
(5)
7
175
(
−
9
)
7
7
=
(
5
−
9
)
7
=
5
×
7
−
9
7
=
35
−
9
(6)
28
7
7
(
＋
)
7
7
7
=
2
(
＋
)
=
2
×
7
＋
2
×
7
=
28
(7)
7
63
(
6
＋
)
7
7
=
(
6
＋
3
)
7
=
6
＋
3
×
7
7
=
6
＋
21
(8)
175
7
(
＋
8
)
7
7
=
5
(
＋
8
)
7
=
5
×
7
＋
40
7
=
35
＋
40
(9)
125
125
(
9
＋
)
5
5
=
5
(
9
＋
5
)
5
=
45
＋
25
×
5
5
=
45
＋
125
(10)
7
7
(
＋
1
)
7
=
7
＋
7
=
7
＋