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