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Fractions
Identify fractions
 Identify rational and irrational numbers
 Equivalent Fractions
Simplifying (Reducing) Fractions

Reducing to the Least Common Denominator

Comparing fractions

Round fractions and mixed numbers
Absolute value of rational numbers
 Reciprocals

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Worksheet
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Identify rational and irrational numbers
Rational numbers
A rational number is a number that can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers.
Examples:
8
2.4337
Irrational numbers
All numbers that are not rational are considered irrational. An irrational number can be written as a decimal, but not as a fraction. An irrational number has endless nonrepeating digits to the right of the decimal point.
Examples:
Classify the following numbers as rational or irrational:
(a) 2.46181818...
(b) 3.010010001...
(c) 3.8748
(d)
(e)
(f)
Solution:
(a) A repeating decimal, therefore rational
(b) A nonrepeating decimal, therefore irrational
(c) A terminating decimal, therefore rational
(d) A fraction, therefore rational
(e) Irrational
(f)
, therefore rational