luren hiked 16,500 feet in the morning and 14,850 in the afternoon. estimate the total number lauren hiked that day?

31,400. I rounded 14,850 to 14,900 and then added 16,500 + 14,900 which equals 31,400. Hope thats correct : >

You could also just add 16,500 and 14,850 and get 31,350 ... and then round that to 31,400.