by 7 Dragons
57 days in the top 100 
(9)Buy new: $0.99
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Now a calculator can be with you wherever you travel. Use Calculator for Kindle to make those quick, every-day calculations like computing sales discounts, double-checking an invoice, or computing a restaurant tip.
In addition to basic math operations, Calculator also includes Square Roots, percentages and exponents, and the trigonometric functions Sine, Cosine, and Tangent. You have standard calculator Memory Functions, and you also get Calculator History; in which the last 10 items and last 10 calculation results are saved for later reference.
Calculator offers keyboard shortcuts to help you work quickly, and a last function undo and digit by digit undo functions to help you correct errors. Help pages explain each feature, and a Shortcuts List page clearly lists all shortcuts.
Now you can do all your calculations on Kindle.
