Răspuns:
transformăm prima oară
a) 5,63 dam + 30 dm;=56.3m+3m=59,3m
c) 0,25 km-1,371 hm;=250m-137,1m=112,9m
e) 1,26 dm + 0,0012 km;=0,126m+1,2m=1,326m
b) 0,8 hm- 62,3 mm;=80m-0,0623m=79,9377m
d) 4,5 dam - 1234 mm;=45m-1,234m=43,766m
f) 204,7 cm + 5601 mm.=2,047m+5,601m=7,648m