Kiseera kyo
1 + 2 + 3 + … + 100 = ?
Bigaate byonna.
Laga eky'okuddamu
5050
Ku kalakuleta: 
1 
100 
N'akalamu ne kkaratasi: 50 × (1 + 100) → 50 × 101 → 5050
1 + 2 + 3 + … + 100 = ?
Bigaate byonna.
5050
Ku kalakuleta: 1 100
N'akalamu ne kkaratasi: 50 × (1 + 100) → 50 × 101 → 5050