Flip two cards at a time. Match an equation (like "6 × 3") with its answer (18) to clear the pair.
16 cards, 8 pairs — each pair is a simple equation and its correct answer. Flip two cards per turn; if they match, they stay face-up, otherwise they flip back and it counts as a move. Clear the board in the fewest moves possible.
A mix of addition, subtraction and multiplication, all with small, easy-to-verify numbers so the challenge is memory, not arithmetic.