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  2. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    The book contains specific algebraic explanations for each of the above operations. Most of the information in this article is from the original book. The algorithms/operations for multiplication, etc., can be expressed in other more compact ways that the book does not specify, despite the chapter on algebraic description. [a]

  3. Marilyn Burns (mathematics educator) - Wikipedia

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

    The I Hate Mathematics! Book. Martha Weston, illustrator. Boston, MA: Little, Brown. ISBN 978-0316117418. [9] Burns, Marilyn (2020). Welcome to Math Class: A Collection of Marilyn's Favorite Lessons, Grades K-6. Houghton Mifflin Harcourt. ISBN 978-1935099529. Burns, Marilyn (25 March 2015). About Teaching Mathematics: A K-4 Resource (4th ed ...

  4. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Multiplication by a positive number preserves the order: For a > 0, if b > c, then ab > ac. Multiplication by a negative number reverses the order: For a < 0, if b > c, then ab < ac. The complex numbers do not have an ordering that is compatible with both addition and multiplication. [30]

  5. List of unsolved problems in mathematics - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.

  6. Montgomery modular multiplication - Wikipedia

    en.wikipedia.org/wiki/Montgomery_modular...

    This is a consequence of the fact that, because gcd(R, N) = 1, multiplication by R is an isomorphism on the additive group Z/NZ. For example, (7 + 15) mod 17 = 5, which in Montgomery form becomes (3 + 4) mod 17 = 7. Multiplication in Montgomery form, however, is seemingly more complicated.

  7. Worksheet - Wikipedia

    en.wikipedia.org/wiki/Worksheet

    They are commonly given to students as homework. The second type of math worksheet is intended to introduce new topics, and are often completed in the classroom. They are made up of a progressive set of questions that leads to an understanding of the topic to be learned. [2] Parents also need worksheets. [3]