Practice Test on Factors


Carefully read the questions on math practice test on factors to understand what we need to find in the required question. The questions on factors are mainly based on how to find the missing factor, by using the tree method find the factors, factor the numbers with the help of division, finding the common factor and problems on factors.


1. Find each missing factor:

(a) ___ × 8 = 24

(b) 5 × ___ = 30

(c) ___ × 9= 45

(d) 8 × ___ = 0

(e) ___ × 8 = 64 

(f) 4 × ___ = 32 

(g) ___ × 8 = 4 × 6 

(h) 4 × 9 = ___ × 6

2. Draw a factor tree for each of the following numbers and find the factors:

(a) 12

(b) 24

(c) 16

(d) 20


3. List all factor of the following numbers with the help of division:

(a) 48

(b) 64

(c) 72

(d) 42


4. Check if the following numbers are factors of the numbers given. Write Yes or No.

(a) 7 of 28

(b) 9 of 54

(c) 6 of 15

(d) 8 of 42

(e) 4 of 52

(f) 12 of 60

(g) 9 of 100

(h) 13 of 72


5. Find the common factors of:

(a) 10, 15

(b) 8, 12

(c) 9, 12

(d) 15, 20

(e) 28, 56

(f) 20, 30

(g) 16, 24, 32

(h) 15, 30, 45


6. Write the factors of each number and the common factors of:

(a) 12; 24

(b) 16; 48

(c) 20; 40; 60


7. Answer the following questions:

(a) Why is every number a factor of itself?

(b) Do you think a number that has 8 as a factor will have 4 as a factor?

(c) Do you think a number that has 3 as a factor will have 6 as a factor?

(d) To find the factors of a number, do you use multiplication or division?

(e) Which factor is common to all numbers?


Answers for the practice test on factors will help the students to check the exact answers of the above questions on factors. 

Answers:

1. (a) 3

(b) 6

(c) 5

(d) 0

(e) 9

(f) 8

(g) 3

(h) 6


2. (a) 12

tree factor of 12


1, 2, 3, 4, 6, 12

(b) 24

tree factor of 24


1, 2, 3, 4, 6, 8, 12, 24

(c) 16

tree factor of 16


1, 2, 4, 8, 16

(d) 20

tree factor of 20


1, 2, 4, 5, 10, 20


3. (a) Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24

(b) Factors of 64: 1, 2, 8, 32, 64

(c) Factors of 72: 1, 2, 3, 4, 6, 12, 18, 24, 36, 72

(d) Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42


4. (a) Yes

(b) Yes

(c) No

(d) No

(e) Yes

(f) Yes

(g) No

(h) No


5. (a) 5

(b) 2, 4

(c) 3

(d) 5

(e) 2

(f) 2, 5, 10

(g) 2, 4, 8

(h) 3, 5


6. (a) factors of 12: 2, 3, 4, 6, 12

factors of 24: 2, 3, 4, 6, 8, 12, 24
common factors of 12 and 24 are 2, 3, 4, 6, 12

(b) factors of 16: 2, 4, 8, 16

factors of 48: 2, 3, 4, 6, 8, 14, 16, 24, 48
common factors of 16 and 48 are 2, 3, 4, 6, 8

(c) factors of 20: 2, 4, 5, 10, 20

factors of 40: 2, 4, 5, 8, 10, 20, 40

factors of 60: 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60 common factors of 20, 40 and 60 are 2, 4, 5, 10, 20


7. (a) We know every number is divisible by itself.

(b) yes

(c) yes

(d) division

(e) 1






From Practice Test on Factors to HOME PAGE




Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.




Share this page: What’s this?

Recent Articles

  1. Divisible by 10 | Test of Divisibility by 10 Video | Rules | Examples

    Mar 29, 25 03:06 PM

    Divisible by 10
    Divisible by 10 is discussed below. A number is divisible by 10 if it has zero (0) in its units place. Consider the following numbers which are divisible by 10, using the test of divisibility by 10:

    Read More

  2. Divisible by 9 | Test of Divisibility by 9 | Rules | Video | Examples

    Mar 29, 25 02:55 PM

    Divisible by 9
    A number is divisible by 9, if the sum is a multiple of 9 or if the sum of its digits is divisible by 9. Consider the following numbers which are divisible by 9, using the test of divisibility by 9:

    Read More

  3. Divisible by 6 | Rules for Test of Divisibility by 6 Video | Examples

    Mar 29, 25 02:48 PM

    Divisible by 6
    Divisible by 6 is discussed below: A number is divisible by 6 if it is divisible by 2 and 3 both. Consider the following numbers which are divisible by 6, using the test of divisibility by 6: 42

    Read More

  4. Divisible by 5 | Rules for Test of divisibility by 5 | Video |Examples

    Mar 29, 25 02:43 PM

    Divisible by 5
    Divisible by 5 is discussed below: A number is divisible by 5 if its units place is 0 or 5. Consider the following numbers which are divisible by 5, using the test of divisibility by

    Read More

  5. Divisibility Rules From 2 to 18 | Math Divisibility Test | Videos |

    Mar 29, 25 02:17 PM

    Divisibility Rules
    To find out factors of larger numbers quickly, we perform divisibility test. There are certain rules to check divisibility of numbers. Divisibility tests of a given number by any of the number 2, 3, 4…

    Read More