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