Răspuns:
a.36 526- 28 635=7 891
Proba : 7 891 +28 635=36 526
36 526- 7 891= 28635
61.382-46859= 14 523
P; 14.523 + 46.859=61.382
61.382-14.523=46.829
b. 280. 026 -89.275=190.751
P;190.751+89.275=280.026
280.026 - 89.275 = 190.751
784.005 - 708.906 =75.099
P: 75.099+708.906= 784.005
784.005 - 75.099 = 708.906
c . 101 384-75.609=25. 775
P :25.775+75.609=101.384
101.384-25.775
340.510- 265.520= 74.990
P: 265.520+ 74.990= 340.510
340.510 - 74.990= 265.520