Question

12dam+2hm=
8km+15dam=
52hm-110dam=
8m+124dm=
70dm+18cm=
3000cm+180dm=

Answer 1

12dam = 1,2 hm
1,2 hm + 2hm = 3,2  hm


8km= 800 dam 
800dam+15dam = 815 dam

124 dm = 12.4 m 
8m + 12.4 m = 20.4  m 

52hm=520 dam
520 dam - 110 dam = 410 dam

70dm = 700 cm
700cm + 18 cm = 718 cm

3000 cm = 300 dm
300 dm +180 dm = 480 dm

Answer 2

1).....12dam+2hm=320
1 dam=10 m1 hm= 100 m
12 dam+2 hm=120m + 200 m= 320 m
2).....8 km+15 dam = 8000 m+150 m=8150 m
3).....52 hm-110 dam=5200 m-1100 m=4100 m
4)...8 m+124 dm=8 m+12,4 m=20,4 m
5)....70dm+18 cm=7000 mm+180 mm=7180 mm