This unique calculator has features to help your students develop and practice math that are available on no other calculator.Features: Four functions plus: percent, change sign, square root, 3 key memory, reset Display has eight digits with period separators in large numbers All basic operation signs clearly display to right of LCD Constant feature to repeatedly operate with the same number UNIQUE Constant counter in display for all four arithmetic operations (Excellent for counting on exercises. Also, for showing multiplication as repeated addition or showing division as repeated subtraction; with whole number remainders.) Floating negative sign appears to immediate left of any displayed number Performs operations in correct M D A S order Fix decimal point from 0 to 7 places Round-off feature in decimal calculations Calculates percent problems in any order/sequence UNIQUE Key Eliminator allows any operation or number key to be disabled (provides practice with renaming/understanding sets of a selected number; example, given the problem of 7 + 5 and the 5 key disabled; have the student rename of find the sets of 5...4 + 1, 3 + 2 and enter one of these sets of numbers in place of entering the disabled 5...7 + 4 + 1 = 12.) CE/C key clears last or all entries RESET key restores floating decimal point and disabled keys UNIQUE built-in ID numbering system on back of calculator for assinging each calculator to an individual student Impact-resistant slanted case with easy-to-read display Hard plastic tamper-proof keys Reference manual free for each student Classroom poster available at no charge Power source: lithium battery with auto shut-off Weight: 63.8 grams (2.25 oz.) Operating temperature:0 to 40 degrees C (32 to 104 degrees F) External dimensions: 70mm x 120mm x 20mm (2.75" x 4.75" x 0.75") One-year warranty
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