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