12-digit heavy-duty printing calculator with equals/plus logic features a large, two-color backlit display with negative numbers in red. Design includes large, well-spaced contoured keys with PC Touch and left-side total key. Print 4.0 lines per second in two colors. Calculator delivers large print on paper tape. Enter two cost/sell/margin variables, the third appears and prints. Functions also include tax set and tax +/-, four-key independent memory, change sign key, delta percent, grand total key, item count, add mode, date/nonadd and automatic constants. Calculator runs on AC power.

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Brain Exerciser Calculator keeps adult minds active with a simple but challenging math drill. Easily choose the number of math drill problems in increments of 25, 50 or 100. The Brain Exerciser calculates your score based upon speed and accuracy of responses. Top three scores are stored in the calculator's memory. Brain Exerciser also provides standard calculator functions with three-key memory, TAX key for easy tax calculations and right shift key for easy corrections. Offers a 10 + 2 digit slant display with punctuation, several math games. Can track and store up to three previous performances.

10-digit all-purpose scientific calculator offers 144 built-in mathematical functions including basic scientific, exponential and trigonometric. Provides six levels of parentheses, single variable statistical and fraction calculations, polar-rectangular conversions. Includes mean, standard deviation, permutations and combinations, backspace key to fix entry mistakes. Calculator is permitted on college entrance examination boards such as SAT and PSAT/NMSQT. Integrated slide-on hard case protects calculator.

Desktop display calculator features a super large, easy-to-read, 12-digit tilt liquid crystal display (LCD). Cost-sell-margin keys allow you to solve CSM problems quickly and easily. Simply enter two variables, and the third appears. Other functions include three-key independent memory, tax rate keys, tax +/- keys, percent key, six decimal settings, round up/down feature, automatic constants, change sign key and backspace key. Calculator runs on solar power with battery backup.

12-digit professional desktop calculator with two-color printing is engineered with antimicrobial protection to reduce growth of microbes and bacteria that cause odors and discoloration. Print 4.5 lines per second in two colors. Design features a 12-digit fluorescent display and commercial keyboard. Functions include automatic tax keys, markup/gross profit margin, four-key independent memory, delta percent-percent of change, percent, change sign, grand total, item count, date/nonadd, and sigma. Calculator runs on AC power and is made with a high percentage of recycled material.

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10-digit, professional calculator features an extra-large, angled LCD that displays larger digits to prevent reading errors. Durable plastic keys are properly spaced for fast and accurate data entry. Cost/sell/margin keys simplify profit margin calculations by allowing you to enter two variables and automatically receive the third variable. Twin-power operation runs on solar energy with a battery backup to provide consistent, reliable performance in any environment. Other functions include currency conversion functions, automatic tax keys, percent key, backspace key, four-key independent memory, extra-large plus key, sign change and more. Desktop calculator is perfect for business professionals at home or in the office.

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12-Digit Portable Printing Calculator with tax and business calculations prints 2 lines per second in purple. Time calculation lets you calculate time-based fee structures, while profit margin calculation can be calculated with the touch of a few keys. Tax rates can be stored and recalled whenever needed. Functions include tax calculations, sign change, percentage add-on/discount, cost/sell/margin, round off/down and decimal point functions at the touch of one of two keys. Calculator runs on AC power with an optional adapter (sold separately) or battery power with four AA batteries (sold separately) and shuts off automatically after seven minutes of nonuse. Calculator also features a battery strength indicator.

Foldout wallet calculator features an eight-digit, liquid crystal display (LCD) and four-key memory. Mathematical features include square root, percentage, sign change, and variable decimal. Fold-over design and sturdy hard cover casing offer protection and convenience during transport. 2 oz. calculator runs on battery and solar power and automatically shuts down after seven minutes of nonuse.