Mastermind Game

https://mastermindgame.org/

New York Times Digits Game

 A fun game to practice arithmetic:

https://www.nytimes.com/games/digits

Arithmetic Practice

 Want to get better at addition, subtraction, multiplication or division? This simple tool can be really helpful:

https://arithmetic.zetamac.com/

Here is another simple flash card tool:

https://sergemister.github.io/mathpractice/

Go ahead, make your math muscles stronger! You can do it!