Question

729 g-140 cg=.....dg
655 dl+88 ml=......ml
2 milenii+2 secole +240 luni=........decenii
31 hm+32 dam=.........m
3 ore-3 min=......min

Answer 1

729 g - 140 cg = 7290 dg  - 1400 dg = 5890 dg
655 dl + 88 ml = 65500 ml + 88 ml= 65588ml
2 milenii + 2 secole + 240 luni = 200 deceni + 20 deceni  + 20 deceni =240 decenii
31  hm + 32 dam = 3100 m + 320 m= 3420 m
3 ore - 3 min = 180 min - 3 min =177 min