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