‎Endless Numbers (iOS, Google Play, and Windows Mobile) free for the numbers 1 to 5. Children complete small mathematical tasks, then they get rewarded with a silly animation that represents a certain number in a funny and memorable way. Fetch Lunch Rush (FREE)  from the PBS Kids show Fetch with Ruff Ruffman. An interactive game. Children do math problems then they walk around to hunt for the answers. Park Math HD by Duck Duck Moose has a TON of learning games for FREE!! They cover basic math skills including counting up to 50. Addition and subtraction problems, patterns, sorting, and more. They have 3 levels for Preschool, Kindergarten, and First Grade. Butterfly Math…