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