Install tuxmath by entering the following commands in the terminal:
sudo apt update sudo apt install tuxmath
Description:
math game for kids with Tux
"Tux, of Math Command" ("TuxMath," for short) is an educational arcade game starring Tux, the Linux mascot! Based on the classic arcade game "Missile Command," Tux must defend his cities. In this case, though, he must do it by solving math problems.
Homepage: http://tux4kids.alioth.debian.org
Version: 2.0.3-2
Section: universe/games