Răspuns :
1. 3826+4524=8350, invers 8350 - 3826 = 4524
2.7102-3327=3775, invers 3227+3775= 7120
3.1134+3545=4679, invers 4679 - 3545 = 1134
2.7102-3327=3775, invers 3227+3775= 7120
3.1134+3545=4679, invers 4679 - 3545 = 1134
Răspuns:
3826+4524=8350
8350-3826=4524
7103-3327=3776
3776+3327=7103
1134+3545=4679
4679-1134=3545