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