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