Printable math worksheet featuring a grid of numbers where students draw factor rainbows to determine if each number is prime or composite.

Math worksheet for creating factor rainbows to identify prime and composite numbers like 15, 24, and 6.

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- 16: Factors: 1, 2, 4, 8, 16. Prime factors: 2. Composite: Yes.
- 24: Factors: 1, 2, 3, 4, 6, 8, 12, 24. Prime factors: 2, 3. Composite: Yes.
- 6: Factors: 1, 2, 3, 6. Prime factors: 2, 3. Composite: Yes.
- 30: Factors: 1, 2, 3, 5, 6, 10, 15, 30. Prime factors: 2, 3, 5. Composite: Yes.
- 45: Factors: 1, 3, 5, 9, 15, 45. Prime factors: 3, 5. Composite: Yes.
- 12: Factors: 1, 2, 3, 4, 6, 12. Prime factors: 2, 3. Composite: Yes.
- 8: Factors: 1, 2, 4, 8. Prime factors: 2. Composite: Yes.
- 36: Factors: 1, 2, 3, 4, 6, 9, 12, 18, 36. Prime factors: 2, 3. Composite: Yes.
- 11: Factors: 1, 11. Prime factors: 11. Composite: No.

Parent Tip: Review the logic above to help your child master the concept of rainbow factor worksheet.

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