Factors & Multiples — Quiz 1

Questions in this quiz (10)

1. The sum of the prime factors of 195 is:

   • 13
   • 5
   • 21
   • 23

2. Including 1 and 60, the number of factors of 60 is:

   • 12
   • 6
   • 7
   • 10

3. Which of the following numbers is prime?

   • 10
   • 19
   • 145
   • 4

4. Determine the prime factorization of $$36$$ using a factor tree.

   • $$2^2 \cdot 3^2$$
   • $$2 \cdot 3^3$$
   • $$2^3 \cdot 3$$
   • $$2^3 \cdot 3^2$$

5. Determine the GCF of $$8$$ and $$12$$.

   • 6
   • 12
   • 8
   • 4

6. Use the prime factorization method to find the GCF of $$54$$ and $$108$$.

   • 36
   • 27
   • 54
   • 18

7. How many multiples of $$5$$ are between $$14$$ and $$21$$?

   • 0
   • 1
   • 2
   • 3

8. Determine the LCM of $$130$$ and $$300$$.

   • 3900
   • 39000
   • 19500
   • 9750

9. Factors of the sum of the smallest prime number and the smallest composite number are:

   • $$1, 5$$
   • $$1, 2, 3, 6$$
   • $$1, 7$$
   • $$1, 2, 4, 8$$

10. A number must be divisible by $$165$$ if the number is divisible by:

    • $$3, 5, 11$$
    • $$2, 4, 7$$
    • $$6, 9, 13$$
    • $$2, 7, 13$$