20-Sided Double Dice Set, 6 Per Pack, 3 Packs
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Koplow Games 20-sided double dice, a die inside of a die, is great for math games! Roll it and add, subtract, multiply or divide the numbers. A great way to practice and understand basic math skills and enhance games and activities. Each pack includes 6 dice in assorted colors. Sold as 3 packs for a total of 18 dice.