subtraction 1
336-259=
77
542+27=
570
562-223=
400
788+212=
1000
693-150=
543
265+426=
700
824-590=
200
821+4543
5364
881-79
802
348+122=
470
844-475=
400
3258+1761
5019
479-88=
391
2189+388=
2600
4263-1613=
2700
1321+2246=
3567
1931-509=
1422
1329+5345
6600
64099-5555=
8000
24593+16861
41454