45
+
23
=
____________________
.
74
+
26
=
____________________
.
125
+
45
=
____________________
.
245
+
135
=
____________________
.
650
+
200
=
____________________
.
1500
+
500
=
____________________
.
345
+
12O
=
____________________
45
-
15
=
____________________
.
124
-
100
=
____________________
.
350
-
150
=
____________________
.
687
-
253
=
____________________
.
980
-
350
=
____________________
.
1500
-
500
=
____________________
5000
-
3000
=
____________________
