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!?
A lot of effort goes in generating printable maths lessons for children of all ages. Equations have been a source of great confusion for most children and these can be easily learnt by solving the worksheet pages. The worksheets can also be prepared according to the needs of the child. The customised work papers can have a limited number of problems, a predicted font size and a topic of interest.