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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
45
45
7
(
＋
)
(2)
75
2
12
(
＋
)
(3)
2
8
(
−1
＋
)
(4)
175
7
(
−7
＋
)
(5)
5
20
3
(
＋
)
(6)
2
5
50
(
＋
)
(7)
45
125
7
(
＋
)
(8)
28
5
7
(
＋
)
(9)
45
125
(
−
9
)
(10)
8
50
(
＋
8
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
45
45
7
(
＋
)
5
5
7
=
3
(
3
＋
)
35
=
9
×
5
＋
3
35
=
45
＋
3
(2)
75
2
12
(
＋
)
3
2
3
=
5
(
＋
2
)
6
=
5
＋
10
×
3
6
=
5
＋
30
(3)
2
8
(
−1
＋
)
2
2
=
(
−1
＋
2
)
2
=
−
＋
2
×
2
2
=
−
＋
4
(4)
175
7
(
−7
＋
)
7
7
=
5
(
−7
＋
)
7
=
−35
＋
5
×
7
7
=
−35
＋
35
(5)
5
20
3
(
＋
)
5
5
3
=
(
2
＋
)
15
=
2
×
5
＋
15
=
10
＋
(6)
2
5
50
(
＋
)
2
5
2
=
(
＋
5
)
10
=
＋
5
×
2
10
=
＋
10
(7)
45
125
7
(
＋
)
5
5
7
=
3
(
5
＋
)
35
=
15
×
5
＋
3
35
=
75
＋
3
(8)
28
5
7
(
＋
)
7
5
7
=
2
(
＋
)
35
=
2
＋
2
×
7
35
=
2
＋
14
(9)
45
125
(
−
9
)
5
5
=
3
(
5
−
9
)
5
=
15
×
5
−
27
5
=
75
−
27
(10)
8
50
(
＋
8
)
2
2
=
2
(
5
＋
8
)
2
=
10
×
2
＋
16
2
=
20
＋
16