| 279320-(102600+170720)=6000 | 649556-(971178-479597)=157975 |
| 290579+(10801+460919)=762299 | 1000000-(522399+215774)=261827 |
| 370000+(638349-308349)=700000 | 987925-(471953-380000)=895972 |
| 774268-(453490+16114)=304664 | 968355-(11935+277002)=679418 |
| 297000-(462694-446615)=280921 | 306935+(12134+301087)=620156 |
| 376444+(300000+310000)=986444 | 466681-(928512-680390)=218559 |
| 663740+(93497+42763)=800000 | 958718-(521401+437317)=0 |
| 490000+(129899+359133)=979032 | 613228-(329000+114228)=170000 |
| 355046-(361403-180739)=174382 | 543065-(636447-165415)=72033 |
| 171650+(376938-41542)=507046 | 665102+(422996-205000)=883098 |
| 178859+(380000-256401)=302458 | 29854+(837000-764460)=102394 |
| 246893+(959584-699259)=507218 | 122045+(218950+144599)=485594 |
