| 780500-(812264-55251)=23487 | 508234-(489397-484163)=503000 |
| 654148-(246085+100000)=308063 | 561947+(67550+194927)=824424 |
| 711045-(47988+523057)=140000 | 924743-(753556-714368)=885555 |
| 793943-(208968+281975)=303000 | 386429+(346729+147147)=880305 |
| 677962+(262786-190748)=750000 | 580638-(14788+262616)=303234 |
| 328867+(381656-17871)=692652 | 716541-(793414-329123)=252250 |
| 453872-(138063+54740)=261069 | 146000+(274266+557766)=978032 |
| 83336-(386563-317486)=14259 | 712015+(67531+111443)=890989 |
| 661406-(770900-717618)=608124 | 857140-(237789+538351)=81000 |
| 252652+(189416+125720)=567788 | 262625+(940000-288943)=913682 |
| 15951+(264347+568754)=849052 | 567636+(729188-609486)=687338 |
| 322538+(737910-184448)=876000 | 155397+(865724-800000)=221121 |
