Are the problems too close together? Make sure you can distinguish between the problem number and the actual problems. The problem numbers should be less obtrusive. Students with and without ADD and ADHD can become distracted by too many distractions!?
His arithmetic skills are awesome but when presented with a math story problem, he falls apart, helpless. No matter how many times I suggest that he read the problem carefully. note down the givens. assign names to intermediate and final values. form equations. activate his Kumon engine (brain), he just can't get past the read_the_problem_carefully step.