Multiple Choice Identify the
choice that best completes the statement or answers the question.


1.

If a number can only be divided by 1 and itself, it is known as:
a.  prime number  c.  multiple number  b.  composite number  d.  factor number 


2.

If a number has only the factors of 1 and 19, we can say it is what kind of
number?
a.  multiple number  c.  prime number  b.  composite number  d.  factor number 


3.

Why is 23 a prime number?
a.  It is a doubledigit number  c.  It ends in
three  b.  It can only be divided itself and 1  d.  It has more than two
factors 


4.

7 is a prime number. Why isn’t 27 a prime number?
a.  It is a doubledigit number  c.  It ends in 7  b.  It is
prime  d.  It has factors of 3
and 9 as well 


5.

A number has the factors of 1, 3 ,4, 24 and 6. Why isn’t it a prime
number?
a.  It is a doubledigit number  c.  It has more than two
factors.  b.  It has an odd number of factors  d.  One of its factors is
3. 


6.

Which of these numbers is prime?


7.

Which of these numbers is NOT prime?


8.

Why is 9 a composite number?
a.  It has more than 2 factors  c.  3 is one of its
factors  b.  It is a one digit number  d.  Because it is a prime number 


9.

Which one of these numbers is a composite number?


10.

Which one of these numbers is NOT a composite number?


11.

If a number includes the factors of 3 and 7, is it composite? Why?
a.  Yes because the total of 3 and 7 is 10, an even number  c.  No because 3 and 7 are odd
numbers  b.  No because composite numbers refer to doubledigit prime numbers.  d.  Yes because 3 and 7 factor into many numbers
such as 21 and 28. 


12.

What do we call a number that can be multiplied by itself and another number to
get a third number?
a.  composite  c.  fraction  b.  factor  d.  symmetrical 


13.

12 ÷ 3 = 4, 3 x 4 = 12, 12 x
1 = 12, 2 x 6 = 12, 12 ÷ 6 = 2. What do we call the numbers 3, 4,
2, 6, and 1 in these equations?
a.  composite  c.  factor  b.  fraction  d.  metric 


14.

15 ÷ 3 = 5 3 x 5 = 15. Which number in these
equations is a factor?


15.

6, 9, 12, 15. These numbers are multiples of which number below?.


16.

Which list below are multiples of 7?
a.  7, 14, 21, 28, 35, 42  c.  7, 8, 9, 10, 11, 12  b.  7, 15 22, 29, 36, 43  d.  7, 0, 14, 0 21, 0,
28 


17.

Which number below is a multiples of 81?
