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