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