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# GREATEST COMMON FACTOR - PowerPoint PPT Presentation

GREATEST COMMON FACTOR. PRESENTED BY :. OSCAR EDUARDO MEJIA KRISTHIAN HERNANDEZ ESCUELA PANAMERICANA FEBRUARY/15/2011. VOCABULARY. Greatest Common Factor (GFC): Is the greatest of the common factors of two or more numbers .

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### GREATEST COMMON FACTOR

• OSCAR EDUARDO MEJIA

• KRISTHIAN HERNANDEZ

ESCUELA PANAMERICANA

FEBRUARY/15/2011

• GreatestCommon Factor (GFC): Isthegreatest of thecommonfactors of twoor more numbers.

• VennDiagram: It uses circlesto show howelementsamong set of numbersorobjects are related. Theregionwherecirclesoverlaprepresentsitemsthat are commontotwoor more sets.

• 12 and 78

• 40 and 50

• 24 and 48

• Charles and Tiffanybothfoundthe GCF of 12, 18 and 27. Whoiscorrect? Explain

• Charles:

• 12= 2*2*3

• 18= 2*3*3

• 27= 3*3*3

• Therefore, the GCF: 2*3*3=18

• Tiffany:

• 12= 2*2*3

• 18= 2*3*3

• 27= 3*3*3

• Therefore, the GCF: 3

• Thecorrect GCF is3 becauseisthecommonnumberamongthe 3 sets of numbersgiven(12, 18 and 27).

• Ontheotherhand, the GCF givenby Charles isincorrectbecausethe 2*3*3=18 isnot a common factor for 12 and 27.