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