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©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
5
5
(
−2
＋
)
(2)
50
18
2
(
＋
)
(3)
45
5
(
−9
＋
)
(4)
50
50
2
(
＋
)
(5)
5
20
2
(
＋
)
(6)
3
2
75
(
＋
)
(7)
2
3
18
(
＋
)
(8)
5
20
(
−
10
)
(9)
2
2
(
−6
＋
)
(10)
5
45
(
−
9
)
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
5
5
(
−2
＋
)
5
=
−2
＋
5
5
=
−2
＋
5
(2)
50
18
2
(
＋
)
2
2
2
=
5
(
3
＋
)
=
15
×
2
＋
5
×
2
=
40
(3)
45
5
(
−9
＋
)
5
5
=
3
(
−9
＋
)
5
=
−27
＋
3
×
5
5
=
−27
＋
15
(4)
50
50
2
(
＋
)
2
2
2
=
5
(
5
＋
)
=
25
×
2
＋
5
×
2
=
60
(5)
5
20
2
(
＋
)
5
5
2
=
(
2
＋
)
10
=
2
×
5
＋
10
=
10
＋
(6)
3
2
75
(
＋
)
3
2
3
=
(
＋
5
)
6
=
＋
5
×
3
6
=
＋
15
(7)
2
3
18
(
＋
)
2
3
2
=
(
＋
3
)
6
=
＋
3
×
2
6
=
＋
6
(8)
5
20
(
−
10
)
5
5
=
(
2
−
10
)
5
=
2
×
5
−
10
5
=
10
−
10
(9)
2
2
(
−6
＋
)
2
=
−6
＋
2
2
=
−6
＋
2
(10)
5
45
(
−
9
)
5
5
=
(
3
−
9
)
5
=
3
×
5
−
9
5
=
15
−
9