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