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GCF and LCM using Prime factorization

Hitting 2 birds with one stone. GCF and LCM using Prime factorization. First, do a factor tree for both numbers. 56. 42. 2. 2. 3. 7. 7. 6. 8. 7. 2. 3. 4. 2. 2. 2. 2. GCF and LCM. The GCF is everything in the intersection of the two circles multiplied. GCF = 2 ∙ 7 = 14.

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GCF and LCM using Prime factorization

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  1. Hitting 2 birds with one stone GCF and LCM using Prime factorization

  2. First, do a factor tree for both numbers 56 42 2 2 3 7 7 6 8 7 2 3 4 2 2 2 2

  3. GCF and LCM The GCF is everything in the intersection of the two circles multiplied. GCF = 2 ∙7 = 14 56 42 2 2 3 7 7 6 8 7 2 3 4 2 2 2 2 The LCM is everything in ALL of the two circles multiplied. LCM = 2 ∙ 2 ∙2 ∙3 ∙7 = 168

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