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Prime or composite?

4th grade (Year 5 in England) · 16 questions · Common Core: 4.OA.B.4 · England: Y5 Multiplication and division

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Date

Score/ 16

1
Question 1
Sofia says: "2 is the only even prime number." True or false?
- A. true
- B. false
2
Question 2
Which of these numbers is prime?
- A. 21
- B. 49
- C. 23
- D. 57
3
Question 3
Is 26 prime or composite?
- A. prime
- B. composite
4
Question 4
Grace says: "2 is the only even prime number." True or false?
- A. true
- B. false
5
Question 5
Which of these numbers is prime?
- A. 37
- B. 51
- C. 91
- D. 87
6
Question 6
Is 87 prime or composite?
- A. prime
- B. composite
7
Question 7
Ravi says: "15 is composite." True or false?
- A. true
- B. false
8
Question 8
Which of these numbers is prime?
- A. 81
- B. 77
- C. 49
- D. 73
9
Question 9
Is 8 prime or composite?
- A. prime
- B. composite
10
Question 10
Sofia says: "15 is composite." True or false?
- A. true
- B. false
11
Question 11
Which of these numbers is prime?
- A. 87
- B. 39
- C. 47
- D. 93
12
Question 12
Is 88 prime or composite?
- A. prime
- B. composite
13
Question 13
Lucia says: "15 is composite." True or false?
- A. true
- B. false
14
Question 14
Which of these numbers is prime?
- A. 21
- B. 53
- C. 91
- D. 63
15
Question 15
Is 78 prime or composite?
- A. prime
- B. composite
16
Question 16
Hiro says: "15 is composite." True or false?
- A. true
- B. false

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