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 {11, 12, 23, 21, 15, 7} → ______
- Prime numbers in {3, 27, 7, 11, 15, 19} → ______
- Prime numbers in {9, 21, 29, 19, 17, 5} → ______
- Prime numbers in {12, 11, 15, 29, 27, 2} → ______
- Prime numbers in {11, 9, 13, 3, 8, 15} → ______
- Prime numbers in {5, 11, 9, 3, 7, 13} → ______
- Prime numbers in {9, 8, 19, 21, 5, 15} → ______
- Prime numbers in {5, 7, 8, 17, 3, 11} → ______
- Prime numbers in {3, 11, 21, 27, 2, 19} → ______
- Prime numbers in {8, 23, 13, 12, 19, 2} → ______
- Prime numbers in {13, 9, 2, 25, 17, 3} → ______
- Prime numbers in {15, 3, 13, 9, 8, 11} → ______
- Prime numbers in {23, 27, 8, 12, 2, 7} → ______
- Prime numbers in {2, 3, 15, 21, 27, 12} → ______
- Prime numbers in {13, 29, 3, 5, 23, 21} → ______
- Prime numbers in {13, 8, 5, 19, 9, 2} → ______
- Prime numbers in {2, 15, 29, 5, 7, 25} → ______
- Prime numbers in {15, 7, 13, 27, 23, 17} → ______
- Prime numbers in {13, 5, 17, 25, 3, 7} → ______
- Prime numbers in {21, 11, 9, 8, 23, 12} → ______