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