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