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