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