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