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