1. Greatest Common Factor and Least common multiple
Gcf & lmc

2. Whaaaaaat???

3. Greatest Common Factor (GCF)
A common factor is a number that is a factor of two or more numbers. The largest common factors of the two or more numbers is called the Greatest Common Factor
__________________________ Common Factor (________)
A _____________________________ factor is a _____________________ that is a ______________________ of two or more numbers. The ____________________ common factors of the ___________ or _______________ numbers is called the _______________________________________________________________.

4. Least Common Multiple (LCM)
The least number that is multiple of two or more whole numbers is the least common multiple.

5. GCF and LCM Problem Solving
How can you tell if a word problem requires you to use Greatest Common Factor or Least Common Multiple to solve?

6. Key words for LCM word problems
Smallest
Minimum
First
Least
Next
Repeated over and over
Multiple items
When both will meet again
When both will be equal

7. Key words for GCF in word problems
Greatest
Largest
Maximum
Dividing something
Cutting something into pieces