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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 計算しなさい
[066-00]
(1)
(
＋
12
)
÷
(
＋
2
)
(2)
(
＋
40
)
÷
(
＋
5
)
(3)
(
＋
12
)
÷
(
＋
4
)
(4)
(
＋
7
)
÷
(
＋
1
)
(5)
(
＋
30
)
÷
(
＋
3
)
(6)
(
＋
100
)
÷
(
＋
10
)
(7)
(
＋
2
)
÷
(
＋
2
)
(8)
(
−
28
)
÷
(
−
7
)
(9)
(
−
40
)
÷
(
−
5
)
(10)
(
＋
1
)
÷
(
＋
1
)
(11)
(
−
8
)
÷
(
−
8
)
(12)
(
＋
60
)
÷
(
＋
6
)
(13)
(
＋
6
)
÷
(
＋
6
)
(14)
(
＋
5
)
÷
(
＋
5
)
(15)
(
＋
7
)
÷
(
＋
7
)
(16)
(
−
80
)
÷
(
−
10
)
(17)
(
＋
6
)
÷
(
＋
3
)
(18)
(
−
40
)
÷
(
−
8
)
(19)
(
＋
90
)
÷
(
＋
9
)
(20)
(
−
40
)
÷
(
−
8
)
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
(
＋
12
)
÷
(
＋
2
)
=
＋
(
12
÷
2
)
=
＋
6
(2)
(
＋
40
)
÷
(
＋
5
)
=
＋
(
40
÷
5
)
=
＋
8
(3)
(
＋
12
)
÷
(
＋
4
)
=
＋
(
12
÷
4
)
=
＋
3
(4)
(
＋
7
)
÷
(
＋
1
)
=
＋
(
7
÷
1
)
=
＋
7
(5)
(
＋
30
)
÷
(
＋
3
)
=
＋
(
30
÷
3
)
=
＋
10
(6)
(
＋
100
)
÷
(
＋
10
)
=
＋
(
100
÷
10
)
=
＋
10
(7)
(
＋
2
)
÷
(
＋
2
)
=
＋
(
2
÷
2
)
=
＋
1
(8)
(
−
28
)
÷
(
−
7
)
=
＋
(
28
÷
7
)
=
＋
4
(9)
(
−
40
)
÷
(
−
5
)
=
＋
(
40
÷
5
)
=
＋
8
(10)
(
＋
1
)
÷
(
＋
1
)
=
＋
(
1
÷
1
)
=
＋
1
(11)
(
−
8
)
÷
(
−
8
)
=
＋
(
8
÷
8
)
=
＋
1
(12)
(
＋
60
)
÷
(
＋
6
)
=
＋
(
60
÷
6
)
=
＋
10
(13)
(
＋
6
)
÷
(
＋
6
)
=
＋
(
6
÷
6
)
=
＋
1
(14)
(
＋
5
)
÷
(
＋
5
)
=
＋
(
5
÷
5
)
=
＋
1
(15)
(
＋
7
)
÷
(
＋
7
)
=
＋
(
7
÷
7
)
=
＋
1
(16)
(
−
80
)
÷
(
−
10
)
=
＋
(
80
÷
10
)
=
＋
8
(17)
(
＋
6
)
÷
(
＋
3
)
=
＋
(
6
÷
3
)
=
＋
2
(18)
(
−
40
)
÷
(
−
8
)
=
＋
(
40
÷
8
)
=
＋
5
(19)
(
＋
90
)
÷
(
＋
9
)
=
＋
(
90
÷
9
)
=
＋
10
(20)
(
−
40
)
÷
(
−
8
)
=
＋
(
40
÷
8
)
=
＋
5