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