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