• Award-winning math game loved by teachers, parents, kids, and grown-ups alike
• Perfect for 2 - 6 players, ages 9 - 109. Adaptable rules for younger players, too.
• Comes with 100 number cards chosen for optimal fun
• Great brain training to improve creative mental math skills
• Practice multiplication, division, addition, subtraction, and square roots

Proof! is an award-winning, fast, fun, and addicting math game that the whole family can enjoy! Work that mental math magic as you race to find creative equations hidden among nine number cards. Keep what you find and collect the most cards to win!

Ages 9 and up