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