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