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