Math Learning Center -Scroll down to the colored tabs and choose a grade K-5 to display the games.
HoodaMath -Gives Common Core standards and math practices for each game
Math Blaster -Requires setting up a free account; gives grade level expectation explanations; can sort games by grade level
Math Games -Select grade and then choose subject or standard
Math Playground -Math and logic games.
Matific -Math videos and games for grades K-6. Requires setting up a free account.
XP Math Games -Common Core math games; uses same strands/categories as MAP