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