Question 1155550
Carla walked 2.5 km in preparation for the Community Walk  -  a  -  thon. Stan walked 2900 m. How many more meters did Stan walk than Carla?
solution 2.5 km =2500 meters 
carala walked 2500 meters  thone.stan walked 2900 meters 
carla has to walk=2900-2500=400 meters