Four plaques with randomly shown numbers on each side are displayed on a small stand. You move ONE of the plaques showing the total of the added numbers can dramatically change. For example; 1239 could become 9123, a difference of almost 8000. A spectator is now asked to rearrange the plaques in any order, he or she wishes and then to add up all of the five resulting four digit numbers. The performer meanwhile and without even viewing the numbers displayed, knows the total the spectator has written down! Made in wood. Measures 6 inches wide by 5 inches deep & 5 inches tall. Over 300 different combinations of numbers possible. No calculators or assistants are required. Instantly repeat the effect with a different outcome.