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OH 450
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OH 450 MODEL- OH450 DESC.- CASIO INC. Accessory FEATURES- * Overhead calculator which emulates the Casio SL450. * This four-function calculator displays the current operation sign & has a floating negative sign in its eight-digit display. * With change sign, square root, percent and memory keys, this calculator is a fine choice for primary mathematics. * Includes carrying case and instructions. * Teachers can receive this item free from Casio with the purchase of 90 SL450 calculators. www.casio.com
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