1-2: prime factors factors: – when 2 or more numbers are multiplied, each number is called a...
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1-2: Prime Factors
• Factors:–When 2 or more numbers are multiplied,
each number is called a factor of the product
Ex) 1 x 5 = 5 2 x 5 = 10 1 x 10 = 10
** There are special types of numbers**
Neither prime nor composite: 0 and 1
Prime Numbers
• A whole number that has exactly 2 factors, 1 and itself.
Ex) 2, 3, 5, 7, 11……
Composite Numbers
• A number greater than 1 with more than 2 factors.
Ex) 6 10 18
Tell whether each number is prime, composite or neither.
1. 28 2. 37 3. 81
4. 0 5. 19 6. 63
PRIME Factoring
Let’s Check out another Video!!!
http://www.khanacademy.org/video/prime-factorization?playlist=Developmental%20Math
Prime factorization:- Every composite number can be expressed as a
product of prime numbers.
36 29 81
Use: FACTOR TREES
Let’s Practice a bit!!!!!!
P 30 #1-9
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