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