2000
+
3000
+
4000
=
____________________
4597
+
6574
+
5978
=
____________________
5879
+
3000
+
____________________
+
2000
=
20752
359
+
499
+
201
=
____________________
7908
-
5989
=
____________________
8906
+
7089
+
____________________
=
16874
899
-
457
=
____________________
308
+
92
=
400
417
+
____________________
+
490
=
1008
308
-
196
=
____________________
590
+
____________________
+
117
=
1415
243
-
121
=
____________________
