56+10=
66
230+100=
330
612+200=
812
87-10=
77
452-100=
352
735+240=
975
961+10=
971
532+100=
652
500+320=
820
891+10=
901
896-100=
796
410-300=
110
801-10=
791
672+100=
772
790-540=
250
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