1. lesson 21.notebook October 08, 2012
Lesson 21:
vocab...
*prime numbers a counting number greater than 1 whose only factors
are 1 and the number itself
*composite numbers a counting number greater than 1 that has more
factors than 1 and itself
*prime factorization the expression of a composite number as a product
of its prime factors
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2. lesson 21.notebook October 08, 2012
Examples (Lesson 21)
A) List the first 10 prime numbers.
B) If a number is not prime, then what is it?
Write the prime factorization of the following numbers:
C) 81
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4. lesson 21.notebook October 08, 2012
F) Use prime factorization to find the GCF of 18 and 81.
G) Use prime factorization to find the GCF of 24 and 36.
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