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©2024 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[1Q3-00]
(1)
5
3
20
(
＋
)
(2)
12
27
(
1
＋
)
(3)
8
2
(
＋
8
)
(4)
45
5
3
(
＋
)
(5)
20
5
(
−3
＋
)
(6)
2
8
7
(
＋
)
(7)
27
3
(
＋
3
)
(8)
12
75
3
(
＋
)
(9)
20
5
(
−2
＋
)
(10)
5
20
(
＋
4
)
©2024 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
5
3
20
(
＋
)
5
3
5
=
(
＋
2
)
15
=
＋
2
×
5
15
=
＋
10
(2)
12
27
(
1
＋
)
3
3
=
2
(
1
＋
3
)
3
=
2
＋
6
×
3
3
=
2
＋
18
(3)
8
2
(
＋
8
)
2
2
=
2
(
＋
8
)
2
=
2
×
2
＋
16
2
=
4
＋
16
(4)
45
5
3
(
＋
)
5
5
3
=
3
(
＋
)
15
=
3
×
5
＋
3
15
=
15
＋
3
(5)
20
5
(
−3
＋
)
5
5
=
2
(
−3
＋
)
5
=
−6
＋
2
×
5
5
=
−6
＋
10
(6)
2
8
7
(
＋
)
2
2
7
=
(
2
＋
)
14
=
2
×
2
＋
14
=
4
＋
(7)
27
3
(
＋
3
)
3
3
=
3
(
＋
3
)
3
=
3
×
3
＋
9
3
=
9
＋
9
(8)
12
75
3
(
＋
)
3
3
3
=
2
(
5
＋
)
=
10
×
3
＋
2
×
3
=
36
(9)
20
5
(
−2
＋
)
5
5
=
2
(
−2
＋
)
5
=
−4
＋
2
×
5
5
=
−4
＋
10
(10)
5
20
(
＋
4
)
5
5
=
(
2
＋
4
)
5
=
2
×
5
＋
4
5
=
10
＋
4