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