8
+
12
:
4
=
____________________
10
:
5
x
3
=
____________________
2
x
(
6
+
9
)
=
____________________
24
-
2
x
(
7
+
3
)
=
____________________
(
10
-
4
)
+
18
:
6
=
____________________
12
:
3
+
5
x
8
=
____________________
7
-
(
8
-
3
)
=
____________________
4
+
(
7
+
2
)
=
____________________
(
9
-
1
)
x
5
=
____________________
80
-
(
50
+
10
)
=
____________________
(
90
-
40
)
-
20
=
____________________
(
700
-
300
)
+
200
=
____________________
