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