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Worksheet (with Solutions): Prime and Composite Numbers
# Prime and Composite Numbers Worksheet
Section A: Multiple Choice Questions
Q1: Which of the following numbers is a prime number?
(a) 9
(b) 15
(c) 11
(d) 21
Q2: How many factors does the number 12 have?
(a) 4
(b) 5
(c) 6
(d) 3
Q3: Which statement is true about the number 1?
(a) 1 is a prime number
(b) 1 is a composite number
(c) 1 is neither prime nor composite
(d) 1 is both prime and composite
Q4: Which number is a composite number?
(a) 2
(b) 17
(c) 19
(d) 8
Q5: What is the smallest prime number?
(a) 0
(b) 1
(c) 2
(d) 3
Q6: Which of the following is NOT a factor of 18?
(a) 6
(b) 9
(c) 4
(d) 3
Q7: How many prime numbers are there between 1 and 10?
(a) 3
(b) 4
(c) 5
(d) 2
Q8: Which number below is the smallest composite number?
(a) 2
(b) 3
(c) 4
(d) 6
Section B: Fill in the Blanks
Q9: A number that has exactly two factors is called a __________ number.Q10: A number that has more than two factors is called a __________ number.Q11: The only even prime number is __________.Q12: The number __________ is neither prime nor composite.Q13: Numbers that divide evenly into another number are called __________.Q14: All prime numbers greater than 2 are __________ numbers.Section C: Word Problems
Q15: Maria is making goodie bags for her party. She has 24 candies to share equally among the bags. List all the possible numbers of goodie bags she can make if she wants to use all the candies with none left over.Q16: Jason says that 29 is a composite number because it is an odd number. Is Jason correct? Explain why or why not.Q17: A teacher wants to arrange 17 students into equal rows for a class photo. What are all the possible arrangements she can make? What type of number is 17?Q18: Lisa wrote down all the prime numbers between 10 and 20. How many prime numbers did she write?Q19: Kevin has 36 baseball cards. He wants to organize them into equal groups with more than 1 card in each group and more than 1 group total. How many different ways can he organize his cards?Q20: Sam thinks that all odd numbers are prime numbers. Give an example of an odd number that is NOT prime to show that Sam is wrong.The document Worksheet (with Solutions): Prime and Composite Numbers is a part of the Grade 4 Course Math Grade 4.
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Apr 21, 2026 Last updated
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