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