Practice Counting, Addition, Subtraction and so much more with 20 Task Cards and 18 Skills Worksheets. You get 18 skills sheets so the task cards can be used many times over. Skills; counting tallies, one more, one less, next three counting numbers, 5 more, 10 more, +100, even or odd, doubles, doubles +1, doubles -1, +1 then double, -1 then double, triple, and 2 open ended pages to fill in your own objectives.