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Math worksheet on prime factorization for finding GCF and LCM using Venn diagrams.

Prime Factorization for GCF and LCM worksheet with Section A matching numbers to prime factors and Section B using Venn diagrams to find GCF and LCM.

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Show Answer Key & Explanations Step-by-step solution for: Prime Factorization for GCF and LCM (A) Worksheet | PDF Printable ...

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- 28 → 2² x 7
- 42 → 2 x 3 x 7
- 56 → 2³ x 7
- 72 → 2³ x 3²
- 80 → 2⁴ x 5
- 90 → 2 x 3² x 5
- 98 → 2 x 7²
- 112 → 2⁴ x 7
- 120 → 2³ x 3 x 5

Section B:
1) GCF of 28 and 90: 2
LCM of 28 and 90: 1260

2) GCF of 28 and 98: 14
LCM of 28 and 98: 196

Parent Tip: Review the logic above to help your child master the concept of gcf and lcm worksheet.

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