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