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