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  2. Exercise (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Exercise_(mathematics)

    An artificially produced word problem is a genre of exercise intended to keep mathematics relevant. Stephen Leacock described this type: [1] The student of arithmetic who has mastered the first four rules of his art and successfully striven with sums and fractions finds himself confronted by an unbroken expanse of questions known as problems ...

  3. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Note also how multiplication by zero causes a reduction in dimensionality, as does multiplication by a singular matrix where the determinant is 0. In this process, information is lost and cannot be regained. For real and complex numbers, which includes, for example, natural numbers, integers, and fractions, multiplication has certain properties:

  4. Lattice multiplication - Wikipedia

    en.wikipedia.org/wiki/Lattice_multiplication

    The lattice technique can also be used to multiply decimal fractions. For example, to multiply 5.8 by 2.13, the process is the same as to multiply 58 by 213 as described in the preceding section. For example, to multiply 5.8 by 2.13, the process is the same as to multiply 58 by 213 as described in the preceding section.

  5. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    First multiply the quarters by 47, the result 94 is written into the first workspace. Next, multiply cwt 12*47 = (2 + 10)*47 but don't add up the partial results (94, 470) yet. Likewise multiply 23 by 47 yielding (141, 940). The quarters column is totaled and the result placed in the second workspace (a trivial move in this case).

  6. Fraction - Wikipedia

    en.wikipedia.org/wiki/Fraction

    A simple fraction (also known as a common fraction or vulgar fraction) [n 1] is a rational number written as a/b or ⁠ ⁠, where a and b are both integers. [9] As with other fractions, the denominator (b) cannot be zero. Examples include ⁠ 1 / 2 ⁠, − ⁠ 8 / 5 ⁠, ⁠ −8 / 5 ⁠, and ⁠ 8 / −5 ⁠.

  7. Multiplication and repeated addition - Wikipedia

    en.wikipedia.org/wiki/Multiplication_and...

    In mathematics education, there was a debate on the issue of whether the operation of multiplication should be taught as being a form of repeated addition.Participants in the debate brought up multiple perspectives, including axioms of arithmetic, pedagogy, learning and instructional design, history of mathematics, philosophy of mathematics, and computer-based mathematics.

  8. Math Blaster! - Wikipedia

    en.wikipedia.org/wiki/Math_Blaster!

    Math Blaster! is a 1983 educational video game, and the first entry in the "Math Blaster" series within the Blaster Learning System created by Davidson & Associates. The game was developed by former educator Jan Davidson. [2] It would be revised and ported to newer hardware and operating systems, with enhanced versions rebranded as Math Blaster ...

  9. Investigations in Numbers, Data, and Space - Wikipedia

    en.wikipedia.org/wiki/Investigations_in_Numbers...

    But parents and math educators have criticized its lack of traditional arithmetic content, of decimal math, of multiplication tables, of division and multiplication of fractions, or even of addition and subtraction of ordinary fractions apart from a small subset, its emphasis on "kindergarten activities" (cutting, folding, taping, etc.) in ...