Prime and Composite Numbers Worksheets

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Explore our wide range of free pdf worksheets to help your child identify prime numbers and composite numbers up to 99 with precision. These practice worksheets help them understand that prime numbers have only two factors, the number 1 and itself; while composite numbers have more than two factors. Kids efficiently identify the given numbers as composite or prime numbers by listing the factors, completing the tables, and answering MCQs. Answer keys are included.

We strongly recommend these printables for grade 4 and grade 5 students.

CCSS: 4.OA

Prime Numbers or Composite Numbers | Worksheet #1

Let your children display heaps of arithmetic creativity with this printable worksheet with 3 sections each. Students practice identifying numbers as either prime or composite and also circle the given numbers as per the instructions provided.

Prime Numbers or Composite Numbers | Worksheet #1

Prime Numbers or Composite Numbers | Worksheet #2

Compiled in this pdf worksheet are exclusive exercises for 4th graders and 5th graders to identify and circle the prime or the composite numbers. This is a good way to teach that a prime number can only be divided by 1 and itself.

Prime Numbers or Composite Numbers | Worksheet #2

Identifying Prime and Composite Numbers | Worksheet #1

Avail of this printable worksheet consisting of two sections in the form of lists and tables and allow young achievers to practice factorization of prime and composite numbers with speed and precision. Suitable for grade 4 and grade 5 kids.

Identifying Prime and Composite Numbers | Worksheet #1

Identifying Prime and Composite Numbers | Worksheet #2

Looking to broaden your child’s horizons and upskill them to tell quickly between composite numbers and prime numbers? Let them break down the composite numbers into several of their prime number factors using this free pdf worksheet.

Identifying Prime and Composite Numbers | Worksheet #2

Prime and Composite Numbers MCQs | Worksheet #1

Kids quickly figure out that all even numbers are composite numbers, except for the number 2. With these smartly designed questions having four options in each exercise, evaluating your child’s skills turns into a fun learning experience for them!

Prime and Composite Numbers MCQs | Worksheet #1

Prime and Composite Numbers MCQs | Worksheet #2

Can your child figure out which prime numbers multiply to form a particular composite number? Watch young learners dive headfirst into this multiple-choice questions worksheet and arrive at their answers accurately. Strongly suggested for 5th graders.

Prime and Composite Numbers MCQs | Worksheet #2