700 because the number followed by 6 is 7. 7 is greater than 4. if the number followed by is 1,2,3,and 4. you can't round it off. ex. 636 the answer is 600. because the number followed is 3 you only change the number followed by 0. if the the number followed by is 5,6,7,8,9 you round it off.
