Here's a series of puzzles for skip counting. Each page has a large image, and lines to cut. Once cut, the images make puzzles. Students use the numbers on the bottom to practice skip counting by 2s, 3s, 4s, 5s, 10s, and 100s. As they put the numbers in order, they are also putting the puzzle together.
"Clear the Board" addition game, 2 players. I would use two different colored cubes (5 each player). Kids place their cubes on the sums they predict will come up the most and when dice is rolled if their sum is the answer they get to remove a cube above that #...first one to clear all their cubes wins. (math center)