[文字サイズの変更]
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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
)
÷
(
−
3
)
(2)
(
+
8
)
÷
(
+
1
)
(3)
(
+
32
)
÷
(
+
8
)
(4)
(
−
64
)
÷
(
−
8
)
(5)
(
−
2
)
÷
(
−
2
)
(6)
(
−
9
)
÷
(
−
9
)
(7)
(
+
90
)
÷
(
+
9
)
(8)
(
+
45
)
÷
(
+
9
)
(9)
(
−
24
)
÷
(
−
3
)
(10)
(
+
8
)
÷
(
+
2
)
(11)
(
−
80
)
÷
(
−
8
)
(12)
(
−
12
)
÷
(
−
3
)
(13)
(
+
64
)
÷
(
+
8
)
(14)
(
−
27
)
÷
(
−
9
)
(15)
(
−
8
)
÷
(
−
8
)
(16)
(
+
30
)
÷
(
+
3
)
(17)
(
+
15
)
÷
(
+
5
)
(18)
(
+
8
)
÷
(
+
2
)
(19)
(
+
45
)
÷
(
+
5
)
(20)
(
+
30
)
÷
(
+
5
)
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
(
−
12
)
÷
(
−
3
)
=
+
(
12
÷
3
)
=
+
4
(2)
(
+
8
)
÷
(
+
1
)
=
+
(
8
÷
1
)
=
+
8
(3)
(
+
32
)
÷
(
+
8
)
=
+
(
32
÷
8
)
=
+
4
(4)
(
−
64
)
÷
(
−
8
)
=
+
(
64
÷
8
)
=
+
8
(5)
(
−
2
)
÷
(
−
2
)
=
+
(
2
÷
2
)
=
+
1
(6)
(
−
9
)
÷
(
−
9
)
=
+
(
9
÷
9
)
=
+
1
(7)
(
+
90
)
÷
(
+
9
)
=
+
(
90
÷
9
)
=
+
10
(8)
(
+
45
)
÷
(
+
9
)
=
+
(
45
÷
9
)
=
+
5
(9)
(
−
24
)
÷
(
−
3
)
=
+
(
24
÷
3
)
=
+
8
(10)
(
+
8
)
÷
(
+
2
)
=
+
(
8
÷
2
)
=
+
4
(11)
(
−
80
)
÷
(
−
8
)
=
+
(
80
÷
8
)
=
+
10
(12)
(
−
12
)
÷
(
−
3
)
=
+
(
12
÷
3
)
=
+
4
(13)
(
+
64
)
÷
(
+
8
)
=
+
(
64
÷
8
)
=
+
8
(14)
(
−
27
)
÷
(
−
9
)
=
+
(
27
÷
9
)
=
+
3
(15)
(
−
8
)
÷
(
−
8
)
=
+
(
8
÷
8
)
=
+
1
(16)
(
+
30
)
÷
(
+
3
)
=
+
(
30
÷
3
)
=
+
10
(17)
(
+
15
)
÷
(
+
5
)
=
+
(
15
÷
5
)
=
+
3
(18)
(
+
8
)
÷
(
+
2
)
=
+
(
8
÷
2
)
=
+
4
(19)
(
+
45
)
÷
(
+
5
)
=
+
(
45
÷
5
)
=
+
9
(20)
(
+
30
)
÷
(
+
5
)
=
+
(
30
÷
5
)
=
+
6