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