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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
3
75
2
(
＋
)
(2)
7
28
2
(
＋
)
(3)
7
3
175
(
＋
)
(4)
3
12
2
(
＋
)
(5)
12
5
12
(
＋
)
(6)
125
5
5
(
＋
)
(7)
5
5
(
＋
4
)
(8)
5
2
5
(
＋
)
(9)
28
7
3
(
＋
)
(10)
125
5
2
(
＋
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
75
2
(
＋
)
3
3
2
=
(
5
＋
)
6
=
5
×
3
＋
6
=
15
＋
(2)
7
28
2
(
＋
)
7
7
2
=
(
2
＋
)
14
=
2
×
7
＋
14
=
14
＋
(3)
7
3
175
(
＋
)
7
3
7
=
(
＋
5
)
21
=
＋
5
×
7
21
=
＋
35
(4)
3
12
2
(
＋
)
3
3
2
=
(
2
＋
)
6
=
2
×
3
＋
6
=
6
＋
(5)
12
5
12
(
＋
)
3
5
3
=
2
(
＋
2
)
15
=
2
＋
4
×
3
15
=
2
＋
12
(6)
125
5
5
(
＋
)
5
5
5
=
5
(
＋
)
=
5
×
5
＋
5
×
5
=
50
(7)
5
5
(
＋
4
)
5
=
5
＋
4
5
=
5
＋
4
(8)
5
2
5
(
＋
)
10
=
＋
5
10
=
＋
5
(9)
28
7
3
(
＋
)
7
7
3
=
2
(
＋
)
21
=
2
×
7
＋
2
21
=
14
＋
2
(10)
125
5
2
(
＋
)
5
5
2
=
5
(
＋
)
10
=
5
×
5
＋
5
10
=
25
＋
5