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