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