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  2. Verbal arithmetic - Wikipedia

    en.wikipedia.org/wiki/Verbal_arithmetic

    Verbal arithmetic. Verbal arithmetic, also known as alphametics, cryptarithmetic, cryptarithm or word addition, is a type of mathematical game consisting of a mathematical equation among unknown numbers, whose digits are represented by letters of the alphabet. The goal is to identify the value of each letter. The name can be extended to puzzles ...

  3. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    The Year 2000 problem was a series of bugs where overflow errors occurred due to use of a 2-digit format for years. Addition of numbers. To prove the usual properties of addition, one must first define addition for the context in question. Addition is first defined on the natural numbers.

  4. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    Mental calculation often involves the use of specific techniques devised for specific types of problems. People with unusually high ability to perform mental calculations are called mental calculators or lightning calculator s. Many of these techniques take advantage of or rely on the decimal numeral system.

  5. Dyscalculia: Symptoms and Treatment of This Math Learning ...

    www.webmd.com/add-adhd/childhood-adhd/...

    This is called acquired dyscalculia. In some cases, your trouble with math might not be related to dyscalculia. It may be a side effect of other things like: Anxiety or math-related anxiety. Lack ...

  6. Carry (arithmetic) - Wikipedia

    en.wikipedia.org/wiki/Carry_(arithmetic)

    Carry (arithmetic) In elementary arithmetic, a carry is a digit that is transferred from one column of digits to another column of more significant digits. It is part of the standard algorithm to add numbers together by starting with the rightmost digits and working to the left. For example, when 6 and 7 are added to make 13, the "3" is written ...

  7. Word problem (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Word_problem_(mathematics...

    Word problem from the Līlāvatī (12th century), with its English translation and solution. In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation.

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