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