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Answer key for Prime & Composite Numbers worksheet, displaying completed table with factors and classifications.

Answer key for Prime & Composite Numbers worksheet showing a table with numbers, their factors, and whether they are prime or composite.

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Show Answer Key & Explanations Step-by-step solution for: Prime and Composite Numbers

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- 2: Factors: 1, 2 → Prime
- 9: Factors: 1, 3, 9 → Composite
- 15: Factors: 1, 3, 5, 15 → Composite
- 23: Factors: 1, 23 → Prime
- 8: Factors: 1, 2, 4, 8 → Composite
- 17: Factors: 1, 17 → Prime
- 3: Factors: 1, 3 → Prime
- 12: Factors: 1, 2, 3, 4, 6, 12 → Composite
- 5: Factors: 1, 5 → Prime
- 10: Factors: 1, 2, 5, 10 → Composite

Parent Tip: Review the logic above to help your child master the concept of prime and composite numbers worksheet grade 4.

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