| 1. | 5 + 71 + (68 - 12) + (42 + 583) - 140 = | 6. | 725 - 300 + (800 - 40) + 3067 = |
| 2. | (94 - 89) + 1046 + 7 - 31 = | 7. | 238 + ((67 + 111) + 3281) - 457 = |
| 3. | 3874 + 764 + (8612 - 4307) + 5986 = | 8. | 499 - (49 - 9) - 99 + 59 = |
| 4. | 608 - 511 + 4265 - (70 + 1354) = | 9. | 1340 - (780 - (275 + 305)) = |
| 5. | (867 + 981) - (600 + 23) + 594 = | 10. | 31 + ((2 + 883) - 17) + 278 = |
