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It screen saver based on a amazing surface – double said funnel. It is infinite surface with straight boundary.

Add, Subtract, Divide and Multiply fractions.Convert a decimal to a fraction or a fraction to a decimal. Quick and easy interface. No confusing menus. This unique program converts decimals to fractions. Great for school or work. Handy for STOCK quote

Lite version converts several units of lenght. Plus version converts lenght, weight and capacity measures. By typing a number into box provided will instantly display the results without the user having to search through a confusing menu of choices.

Calculate the percentage of any number out of any number. Great little tool to have on anyones desktop.

Add, Subtract, Divide and Multiply fractions.Convert a decimal to a fraction or a fraction to a decimal. Quick and easy interface. No confusing menus. This unique program converts decimals to fractions. Great for school or work. Handy for STOCK quote

Master the art of mental calculation in just 3 minutes a day, no matter how much you've struggled with math up till now. Mental Math Master uses animation, audio, and a proven 60-module mental math course to turn you into a natural human calculator.