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