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