Lesson Worksheet: Prime and Composite Numbers Mathematics
In this worksheet, we will practice deciding whether a number is prime or composite using models and finding the prime factors of a number.
Q1:
Which of the following is the prime factorization of 11?
- A
- B1
- C
- D
- E11
Q2:
What is the largest prime factor of 120?
Q3:
The prime factorization of a number is . What is the number?
Q4:
Find the prime factoring of 16.
Hint: Draw a factor tree to help you.
- A
- B
- C
- D
- E
Q5:
Find the prime number where the sum of the factors is 84.
Q6:
Is 23 a prime or a composite number?
- Aa composite number
- Ba prime number
Q7:
Find the smallest number whose prime factors are 3, 5, and 7.
Q8:
Which of the following is not a prime number?
- A23
- B73
- C68
- D2
Q9:
Yara has found that .
Is 91 a prime or a composite number?
- Aa composite number
- Ba prime number
Q10:
Find the missing number in the given Venn diagram.
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