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