Cevap:
a) 150 - 80 = 70
b) 240 - 100 = 140
c) 180 - (80-20) = 180 - 60 = 120
d) 130 - (100-75) = 130 - 25 = 105
e) 120 - (80-50) = 120 - 30 = 90 90 + 30 = 120
f) 70 - (200-150) = 70 - 50 = 20 20 + 80 = 100