Each card is divided: one half shows a number, the other half shows a small calculation task (plus / minus; numbers 1-20). Each player receives 4-6 cards, depending on the number of players. A starting card is drawn from the card pile. On their turn, the player tries to put connect one of their cards to the cards on the table by matching a calculation task with the correct solution. If the player has no fitting card in their hand, they skip the turn and draw a card from the pile. The first player to add all their cards to the display wins.

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