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