1. lesson 27.notebook November 02, 2012
Lesson 27:
FYI...
*We can use Prime Factorization to find the Least Common
Multiple (LCM) of sets of numbers!
To find the LCM...
­Do the factor tree...write your answer with exponents
­Bring down EVERY base with the LARGEST exponent
­Multiply it out to find the LCM!
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2. lesson 27.notebook November 02, 2012
Examples (Lesson 27):
Find the Least Common Multiple (LCM) of each pair or group
of numbers.
A) 8 ­
10 ­
LCM ­
B) 4 ­
6 ­
10 ­
LCM ­
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3. lesson 27.notebook November 02, 2012
C) 24 ­
40 ­
LCM ­
D) 30 ­
75 ­
LCM ­
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4. lesson 27.notebook November 02, 2012
E) Instead of dividing 7 1/2 by 1 1/2, double each number
and mentally calculate the quotient.
Mentally calculate the following:
F) 24,000 400
G) $6.00 12
H) 140 5
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