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Mathemagic can turn you into a human computer! Included are 4 square sticks with random single digit numbers. When placed side by side, you have four 4-digit numbers. You can instantly figure out the total of the 4 numbers! You can
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How to perform feats of MATHEMATICAL WIZARDRY! They'll marvel at your amazing number tricks, games, lightning calculation, your magical knowledge. They'll think you're a genius! You are going to love the things
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