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