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