Free QUIZ with Answers on Factors and Prime Factors of a Number
Check your understanding.
Answer these questions and check your answer by clicking the Answer button.
1. What is a factor of 8?
a) Any number in the 8 times table.
b) A fraction
c) A number that divides 8 exactly, leaving zero remainder.
2. Find the missing factors of 24.
1, 2, ___, ___, ___, ___, ___ and ___
3. Sara said that 49 has two factors because 49 = 7 × 7.
Is she correct?
a) Yes, because 7 divides 49 completely leaving no remainder.
b) No, there are three factors of 49: 1, 7, 49
c) No, there is only one factor of 49: 7
d) No, because there are four factors of 49: 1, 7, 7, 49
4. 15 is a factor of 5.
a) True
b) False
5. Which of the following pair is a factor of 16?
a) 1 and 15
b) 4 and 4
c) 10 and 16
d) 2 and 8
6. Which of the following pair is a factor of 20?
a) 1 and 19
b) 2 and 10
c) 3 and 8
d) 4 and 6
7. Which of these numbers is not a factor of 25?
a) 1
b) 2
c) 5
d) 25
8. List all the factors of 45?
9. List all the factors of 19?
10. List all the factors of 33?
11. Express 1050 as a product of its prime factors.
12. Express 210 as a product of its prime factors.
13. Express 420 as a product of its prime factors.
14. Express 160 as a product of its prime factors.
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