1) (48:6+26)*2 = (8+26)*2 = 34*2 = 68
2) 2600-150:3 = 2600-50 = 2550
3) 519*2-99:33 = 1038 - 3 = 1035
4) 15*18:9+361-954:3 = 270:9+361-318 = 30+361-318 = 391-318 = 73
5) 64*(8+2)-549+36*9 = 64*10-549+324 = 640-549+324 = 91+324 = 415
6) 350-184+(723-530) = 350-184+193 = 166+193 = 359
7) 130*5+72:24 = 650+3 = 653
8) (630+270:9):2 = (630+30):2 = 660:2 = 330
9) 160*4-(96-36:3) = 640-(96-12) = 640-84 = 556