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  2. Little Professor - Wikipedia

    en.wikipedia.org/wiki/Little_Professor

    The Little Professor is a backwards-functioning calculator designed for children ages 5 to 9. Instead of providing the answer to a mathematical expression entered by the user, it generates unsolved expressions and prompts the user for the answer.

  3. MACRS - Wikipedia

    en.wikipedia.org/wiki/MACRS

    The Modified Accelerated Cost Recovery System (MACRS) is the current tax depreciation system in the United States. Under this system, the capitalized cost (basis) of tangible property is recovered over a specified life by annual deductions for depreciation.

  4. Oil depletion allowance - Wikipedia

    en.wikipedia.org/wiki/Oil_depletion_allowance

    The oil depletion allowance in American (US) tax law is a tax break claimable by anyone with an economic interest in a mineral deposit or standing timber. [citation needed] The principle is that the asset is a capital investment that is a wasting asset, and therefore depreciation can reasonably be offset (effectively as a capital loss) against income.

  5. Math Rescue - Wikipedia

    en.wikipedia.org/wiki/Math_Rescue

    Math Rescue is a 1992 educational platform game created by Karen Crowther of Redwood Games and published by Apogee Software. Its early pre-release title was "Number Rescue". [ 1 ] Released in October 1992 for the MS-DOS platform, it is a loose successor to the earlier game Word Rescue , whose game engine was used to power the new game with ...

  6. IRS Warning: This One Tax Mistake Will Cost You - AOL

    www.aol.com/finance/irs-warning-one-tax-mistake...

    HSAs, for example, provide a tax deduction on contributions, tax-free growth and tax-free distributions when used for appropriate expenses. The same is true for FSAs, although the tax benefit on ...

  7. What is compound interest? How compounding works to turn time ...

    www.aol.com/finance/what-is-compound-interest...

    Here’s what the letters represent: A is the amount of money in your account. P is your principal balance you invested. R is the annual interest rate expressed as a decimal. N is the number of ...

  8. Depreciation - Wikipedia

    en.wikipedia.org/wiki/Depreciation

    An asset depreciation at 15% per year over 20 years. In accountancy, depreciation refers to two aspects of the same concept: first, an actual reduction in the fair value of an asset, such as the decrease in value of factory equipment each year as it is used and wears, and second, the allocation in accounting statements of the original cost of the assets to periods in which the assets are used ...

  9. Recreational mathematics - Wikipedia

    en.wikipedia.org/wiki/Recreational_mathematics

    Some of the more well-known topics in recreational mathematics are Rubik's Cubes, magic squares, fractals, logic puzzles and mathematical chess problems, but this area of mathematics includes the aesthetics and culture of mathematics, peculiar or amusing stories and coincidences about mathematics, and the personal lives of mathematicians.