Question

Calculează și completează:
8 m+...m=1 dm;30 m+...m=1 hm;700m+...m=1 km;7hm+30m=...m;9dam+3dam=...dm;20hm+1 hm=. . m;460m+...m=100dam;250m+...m=10 hm;400m+...m=1km;30cm+4dm=..mm;15dm-95 cm=....cm;1900dm-4780cm=...dm.

Answer 1

8m+2m=1dam
30m+70m=100m=1hm
700m+300m=1000m=1km
7hm+30m=700m+30m=730m
9dam+3dam=12dam=1200dm
20hm+1hm=21hm=2100m
460m+540m=1000m=100dam
250m+750m=1000m=10hm
400m+600m=1000m=1km
30cm+4dm=300mm+400mm=700mm
15dm-95cm=150cm-95cm=55 cm
1900dm-4780cm=1900dm-478dm=1422dm

Answer 2

8m+2m=1dam
30m+70m=10m=1hm
700m+300m=1000m=1km
7hm+30m=700m+30m=730m
9dam+3dam=12dam=1200dm
20hm+1hm=21hm=2100m
460m+540m=100m=1km
250m+750m=1000m=10hm
400m+600m=1000m=1km
30cm+4dm=300mm+400mm=700mm
15dm-95cm=150cm-95cm=55cm
1900dm-4780cm=1900dm-478dm=1422dm