a
)
16
÷
4
=
____________________
b
)
(
-
12
)
÷
(
6
)
=
-
____________________
c
)
(
-
16
)
÷
(
-
2
)
=
____________________
d
)
-
81
÷
3
÷
-
3
=
-
____________________
e
)
72
÷
(
-
8
)
=
-
____________________
f
)
(
7
)
x
(
9
+
36
)
÷
(
5
x
1
)
=
____________________
g
)
(
10
x
12
x
9
)
÷
(
-
3
x
6
x
-
5
)
=
____________________
h
)
(
-
18
)
÷
(
-
3
)
=
6
