| -20000+(735254-897832)=-182578 | -231795-(844522-148351)=-927966 |
| 326577-(213144+620000)=-506567 | 280548+(-823576+399968)=-143060 |
| 94282-(-10835-877143)=982260 | -157240-(190886+148389)=-496515 |
| -149585-(-92899+594496)=-651182 | 547032+(280286-835113)=-7795 |
| -535000+(266501-473490)=-741989 | 157757-(-789546+772849)=174454 |
| -90640-(666000-56640)=-700000 | 26290+(-279000+220710)=-32000 |
| 677480+(-567441-831100)=-721061 | 451609-(934780-243171)=-240000 |
| -848385-(-879569+131184)=-100000 | 385513-(98521+986992)=-700000 |
| 334627-(-300000+489889)=144738 | -775000-(890000-707911)=-957089 |
| 796000+(-193348-502652)=100000 | 689634-(507996+249638)=-68000 |
| -702271+(-407712+429983)=-680000 | -128752+(-366385-84772)=-579909 |
| -772745+(-820009+663953)=-928801 | -580000+(-540000+510000)=-610000 |
