A) 43dm + 2,5dm = 45,5dm/ 455cm
B) 1. 300mm + 50mm = 350 mm/ 35cm 2. 720cm + 75cm = 795cm/ 79,5dm 3. 200cm + 3,5cm = 203,5cm/ 2035mm
C) 13000m - 550m = 12450m/ 12,45km
D) 1. 16000mm - 5mm = 15995mm/ 15,995m 2. 99000mm - 99mm = 98901mm/ 989,01dm 3. 99000m - 1350m = 97650m/ 97,65km