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