You start at 21 and subtract either 1, 2, or 3 (you choose). Then the computer will take a turn. This process repeats until either the player or computer reaches. The best free math games. Have fun while you learn mathematics, for all ages and levels, including primary school children, high school teenager and even. As in the previous game, players alternate saying one, two, or three numbers per turn. This time, the one who says " 21 " wins the game. What is the winning. Click on the numbers in ascending order and do it very fast, there's many levels to see and play. MathJax userscript install Greasemonkey or Tampermonkey. Confirm your email to enable sharing. But when they get good at that, we can change the number of numbers they are allowed to play in a turn. A great business game where you run your own coffee shop. Planning With Kids Navigation HOME ABOUT START HERE THE BOOK THE COURSE THE BLOG CONTACT Search HOME ABOUT START HERE THE BOOK THE COURSE THE BLOG CONTACT Search. Build an ice tower with bayern munich vs juventus full match in rising order.