Silly Numbers - Adding and Subtracting to 20

With these fun quartet games, children automate their learning through play.
Find the opponent who has your missing quartet cards. If you solve the sum correctly, you get the card.
You can check the solution with the magic envelope.

Learn to add and subtract up to 20 through play.

Smart math game with a handy checking system in a luxurious box (200 x 150 x 50).

With 76 quartet cards, magic envelope, and game rules.
For 1-4 players or teams. Also suitable for independent practice.