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