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2. Chunking (division) - Wikipedia

   en.wikipedia.org/wiki/Chunking_(division)

   To calculate the whole number quotient of dividing a large number by a small number, the student repeatedly takes away "chunks" of the large number, where each "chunk" is an easy multiple (for example 100×, 10×, 5× 2×, etc.) of the small number, until the large number has been reduced to zero – or the remainder is less than the small ...

3. Division (mathematics) - Wikipedia

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

   In abstract algebra, given a magma with binary operation ∗ (which could nominally be termed multiplication), left division of b by a (written a \ b) is typically defined as the solution x to the equation a ∗ x = b, if this exists and is unique. Similarly, right division of b by a (written b / a) is the solution y to the equation y ∗ a = b ...

4. Cross-multiplication - Wikipedia

   en.wikipedia.org/wiki/Cross-multiplication

   An anonymous manuscript dated 1570 [7] said: "Multiplication is vexation, / Division is as bad; / The Rule of three doth puzzle me, / And Practice drives me mad." Charles Darwin refers to his use of the rule of three in estimating the number of species in a newly discerned genus. [ 8 ]

5. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   The examples and perspective in this article deal primarily with Ontario and do not represent a worldwide view of the subject. You may improve this article , discuss the issue on the talk page , or create a new article , as appropriate.

6. Principles and Standards for School Mathematics - Wikipedia

   en.wikipedia.org/wiki/Principles_and_Standards...

   The Principles and Standards for School Mathematics was developed by the NCTM. The NCTM's stated intent was to improve mathematics education. The contents were based on surveys of existing curriculum materials, curricula and policies from many countries, educational research publications, and government agencies such as the U.S. National Science Foundation. [3]

7. Pell's equation - Wikipedia

   en.wikipedia.org/wiki/Pell's_equation

   Dividing throughout by 64 ("8" for and ) gave the triple (24, 5/2, 1), which when composed with itself gave the desired integer solution (1151, 120, 1). Brahmagupta solved many Pell's equations with this method, proving that it gives solutions starting from an integer solution of x 2 − N y 2 = k {\displaystyle x^{2}-Ny^{2}=k} for k = ±1, ±2 ...