Prime & Composite Worksheet
Recommended for 4th Grade — 6th Grade
Prime & Composite Worksheet
Name: ____________________Date: ____________
Instructions: Identifying prime and composite numbers and writing prime factorizations.
20 problems
- Prime numbers in {3, 2, 9, 12, 5, 15} → ______
- Prime numbers in {5, 21, 9, 8, 11, 7} → ______
- Prime numbers in {13, 11, 29, 3, 15, 23} → ______
- Prime numbers in {7, 21, 5, 2, 13, 15} → ______
- Prime numbers in {8, 17, 5, 27, 7, 29} → ______
- Prime numbers in {9, 11, 5, 21, 12, 2} → ______
- Prime numbers in {23, 8, 27, 9, 13, 17} → ______
- Prime numbers in {5, 7, 8, 23, 27, 17} → ______
- Prime numbers in {21, 25, 8, 27, 3, 19} → ______
- Prime numbers in {8, 27, 5, 17, 11, 3} → ______
- Prime numbers in {5, 17, 3, 25, 21, 12} → ______
- Prime numbers in {23, 17, 12, 27, 13, 21} → ______
- Prime numbers in {7, 17, 8, 13, 3, 15} → ______
- Prime numbers in {3, 12, 15, 25, 9, 5} → ______
- Prime numbers in {21, 25, 2, 23, 15, 8} → ______
- Prime numbers in {2, 3, 19, 21, 17, 25} → ______
- Prime numbers in {23, 27, 25, 9, 17, 15} → ______
- Prime numbers in {5, 25, 8, 9, 17, 3} → ______
- Prime numbers in {21, 2, 7, 11, 19, 13} → ______
- Prime numbers in {17, 5, 25, 29, 23, 2} → ______