Greatest Common Factor FRACTIONS Greatest Common Factor

Using What You Know . . . LEAST COMMON MULTIPLE GREATEST COMMON FACTOR Helps find Common Denominators GREATEST COMMON FACTOR Helps Reduce fractions

GREATEST COMMON FACTOR Using What You Learned . . . GREATEST COMMON FACTOR Helps reduce fractions What’s the GCF?? What factors do they share? Which of those factors is the largest? = ?

GREATEST COMMON FACTOR Using What You Learned . . . GREATEST COMMON FACTOR Helps reduce fractions What’s the GCF?? You can list the factors You can make factor trees = ?

GREATEST COMMON FACTOR Using What You Learned . . . What’s the GCF?? Factor Tree 6 9 2 3 3 3 Circle the # when it is prime Line up the factors 6: 2 3 9: 3 3 GCF = 3 GREATEST COMMON FACTOR Helps reduce fractions = ?

Greatest Common Factor 5 20 THINK . . . Greatest . . . The biggest possible Common . . . They both have it Factor . . . A factor of both numbers

Greatest Common Factor HINT The GCF will ALWAYS be EQUAL to Or SMALLER than the smallest of the two (or three numbers)

Greatest Common Factor 3 and 7 All of these numbers are PRIME. IF both numbers are PRIME, the GCF will be 1. 5 and 7 11 and 13

Greatest Common Factor All of these numbers are PRIME. IF both numbers are PRIME, the GCF will be 1. 3 and 7 1 1 5 and 7 11 and 13 1

Give It A Try – What’s the GCF? 3 and 5 12 and 20 5, 3, and 7 3 and 9 4 and 12 6 and 12 10 and 25 14 and 24 6 and 9 15 and 100 6 1 4 5 1 2 3 3 5 4