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