A).....=605+33=638
B).....=403+101=504
C).....=500-144=356
D).....=907+721=1628
E).....=500-440=60
F).....=1400-1360=40
G)....=1:10:100×1000=0,1:100×1000=100:100=1
H)....=9240-13+85=9312
I)....=7000-25+3312=10287
J).....=4000-2250-1280=470
K)....=1000-99+100-33-68=0
L).....=3300-1080+2208-0=4428