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