400
On a numberline plot 5/8.
Your numberline should have a 0 and 1. There should be 9 lines spread equally apart. The first line should be a 0. You would then have a line to represent 1/8,2/8,3/8,4/8,5/8,6/8,7/8 and 8/8 or 1 whole. You should have 5/8 marked.