| 510000-(988097-798097)=320000 | 590000-(220000+190000)=180000 |
| 641660-(400000+210231)=31429 | 817571+(831693-731407)=917857 |
| 543708-(336673+141930)=65105 | 646560-(497714-250000)=398846 |
| 729820-(262773+312399)=154648 | 214968+(439109-394077)=260000 |
| 228783+(474177-463673)=239287 | 171014+(77000+93347)=341361 |
| 270000+(660320-430320)=500000 | 955750-(335768+266751)=353231 |
| 151655-(751928-633763)=33490 | 35927+(289653+450518)=776098 |
| 194061-(583601-512470)=122930 | 165626+(402361-286512)=281475 |
| 60452+(324036+150384)=534872 | 340000+(299513+206210)=845723 |
| 892204-(247516+538410)=106278 | 323342+(360012-340000)=343354 |
| 47007+(269625+175529)=492161 | 281823-(914508-859310)=226625 |
| 267465-(582155-526657)=211967 | 292678+(206912+399453)=899043 |
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