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