The Kingdom of Infinite Number: A Field GuideHenry Holt and Company, 15 сент. 2001 г. - Всего страниц: 398 Just as bird guides help watchers tell birds apart by their color, songs, and behavior, The Kingdom of Infinite Number is the perfect handbook for identifying numbers in their native habitat. Taking a field guide-like approach, it offers a fresh way of looking at individual numbers and the properties that make them unique, which are also the properties essential for mental computation. The result provides new insights into mathematical patterns and relationships and an increased appreciation for the sheer wonder of numbers. |
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... example, consider the following problem, the final question in the 1997 U.S. national Mathcounts competition: “Shelly's total cost for a mountain bike is $900, including tax and interest. Her first payment is 25 percent of the cost and ...
... people use this mental number line to determine , for example , that 2 is between 1 and 3 and that 3 follows 1 and 2 , rather than needing to remember and apply these statements in each case . Babies as young as five months can be tested ...
... example, you instantly think of them as = 5 × 7 and 16 = 24 = 2 × 2 × 2 × 2. Thus, the product 35 × 16 is the same as 5 × 7 × 2 × 2 × 2 × 2. Now you pick and choose to make your best deal. For example, you can pick out the 5 and one of ...
... example, we often keep score of games with the short strokes called tally marks. Usually these begin as simple strokes, | || ||| ||||, and they could continue that way if scores in the game are low: |||||||| to |||||||, for example. But ...
... example, that 5—as in the five fingers on a hand—has been an important stopping place for numeration. This is clearly visible in Roman numerals, which use V for 5 and two Vs in the form of an X for 10. The Maya, whose numeration system ...
Содержание
Genera Integral and Rational Signed Numbers | |
Genus Rational | |
Genus Real NumberLine Numbers | |
Genus Complex AllInclusive Numbers | |
Kingdom Infinity | |
A Note on Taxonomy | |