1) (624+571) + 376 = (1195) + 376 = 15712) 212 + 497 + 788 + 803 = 212 + (497 + 788) + 803 = 212 + 1285 + 803 = 2300
1) (837+641)-537 = 837 + (641-537) = 837 + 104 = 9412) 923 - (215+623) = 923 - 838 = 85
1) (624+571) + 376 = (1195) + 376 = 1571
2) 212 + 497 + 788 + 803 = 212 + (497 + 788) + 803 = 212 + 1285 + 803 = 2300
1) (837+641)-537 = 837 + (641-537) = 837 + 104 = 941
2) 923 - (215+623) = 923 - 838 = 85