1
)
1975
.
23
-
897
.
05
=
____________________
,
____________________
2
)
8759
-
7
953
.
89
=
____________________
.
____________________
3
)
765
+
8
965
.
23
+
12
589
.
9
=
____________________
.
____________________
4
)
1
823
+
23
.
5
+
4
789
.
75
=
____________________
.
____________________
5
)
12
.
56
+
45
798
+
12
569
.
2
=
____________________
.
____________________
6
)
15
978
,
3
-
12
569
=
____________________
.
3
