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LCM and GCF

Finding the Least Common Multiple (LCM):

LCM is found under MATH NUM, arrow down to #8:  lcm(
 

From the home screen, choose lcm(  followed by two numbers separated by a comma.

NOTE:  lcm( accepts non-negative integers only and works with only two entries at a time.
 

Example:  
Find the LCM for 10, 15, and 45.

 

Since LCM can only accept two entries at a time, find the LCM of the first two values, and then find the LCM of your answer and the third value.

 

Finding the Greatest Common Factor (GCF):

NOTE:  The calculator refers to the GCF as the GCD, greatest common divisor.

GCD is found under MATH NUM, arrow down to #9:  gcd(

From the home screen, choose gcd(  followed by two numbers separated by a comma.

NOTE:  gcd( accepts non-negative integers only and works with only two entries at a time.
 

Example:  
Find the GCF (or GCD) for 12, 24, and 32.

 

Since GCD can only accept two entries at a time, find the GCD of the first two values, and then find the GCD of your answer and the third value.


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