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http://www.math.harvard.edu/~knill/mathmovi es/swf/bartproblem.html http://www.math.harvard.edu/~knill/mathmovi es/swf/bartproblem.html

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Whole numbers and their opposites. Natural Numbers - Natural counting numbers. 1, 2, 3, 4 … Whole Numbers - Natural counting numbers and zero. 0, 1, 2, 3 … Integers - … -3, -2, -1, 0, 1, 2, 3 … Integers, fractions, and decimals. Rational Numbers - Ex:

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Venn Diagram: Naturals, Wholes, Integers, Rationals Naturals Wholes Integers Rationals

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What are RATIONAL Numbers?

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A number that can be expressed as a fraction or ratio (rational). The numerator and the denominator of the fraction are both integers. When the fraction is divided out, it becomes a terminating or repeating decimal. ( Even a big, clunky fraction like 7,324,908/56,003,492 is rational, simply because it can be written as a fraction.)

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6 can be written as: 6/1 or 6.0 -2 can be written as: -2/1 or -2.0 ½ can be written as: 0.5 -5/4 can be written as: -1.25 2/3 can be written as: ----.66

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What are IRRATIONAL Numbers?

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An irrational number can be written as a decimal, but not as a fraction. In decimal form, irrational numbers do not repeat in a pattern nor do they terminate.

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= 3.141592654….. = 1.414213562….. .6781011132…

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http://web.archive.org/web/20070818074103 /http://regentsprep.org/Regents/Math/rationa l/Prat.htm http://web.archive.org/web/20070818074103 /http://regentsprep.org/Regents/Math/rationa l/Prat.htm

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REAL NUMBERS (as opposed to fake numbers?) Two Kinds of Real Numbers Rational Numbers Irrational Numbers.

REAL NUMBERS (as opposed to fake numbers?) Two Kinds of Real Numbers Rational Numbers Irrational Numbers.

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