1
.
12
x
6
-
60
=
____________________
2
.
3
/
8
x
4
/
5
=
____________________
/
____________________
=
____________________
/
____________________
3
.
9
+
(
5
-
40
)
5
=
____________________
4
.
4
-
{
5
(
3
+
2
)
-
(
4
+
6
)
-
3
}
=
-
____________________
5
.
-
2
{
-
3
[
9
(
3
+
7
)
-
(
5
+
4
)
2
]
}
=
-
____________________
6
.
45
-
5
x
9
+
20
=
____________________
7
.
2
/
4
+
10
/
20
=
____________________
8
.
3
/
5
-
9
/
30
=
____________________
/
____________________
9
.
6
/
18
-
1
/
3
=
____________________
/
____________________
10
.
5
/
7
x
7
/
4
x
4
/
5
=
1
