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