Suppose you have to walk for 2.87 km to attend a party at your friend's home. If you have already walked for 1500 m, how many more kilometres do you have to go?
1.37 km
2.87 km = 2.87 × 1000 = 2870 m
No. of metres left to go = 2870 - 1500 = 1370 m
1370 m = 13701000 = 1.37 km