Scroll:Number theory >> Identify factors >> mcq (3706)


Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.



 

1)  

 Which number is a factor of 3






(                    )




2)  

 Which number is a factor of 15






(                    )




3)  

 Which number is a factor of 12






(                    )




4)  

 Which number is a factor of 3






(                    )




5)  

 Which number is a factor of 15






(                    )




6)  

 Which number is a factor of 12






(                    )




7)  

 Which number is a factor of 3






(                    )




8)  

 Which number is a factor of 15






(                    )




9)  

 Which number is a factor of 12






(                    )




10)  

 Which number is a factor of 3






(                    )




 

1)  

 Which number is a factor of 3





Answer: 2


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

3 ÷ 5 = 3 R 2     No
3 ÷ 8 = 2 R 2     No
3 ÷ 6 = 2 R 0     No
3 ÷ 1 = 3 R 0    Yes, 3 divides evenly


3 divides evenly into 3, so 3 is a factor.

 



2)  

 Which number is a factor of 15





Answer: 2


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

15 ÷ 4 = 3 R 3     No
15 ÷ 6 = 2 R 3     No
15 ÷ 7 = 2 R 1     No
15 ÷ 3 = 5 R 0    Yes, 5 divides evenly


5 divides evenly into 15, so 5 is a factor.

 



3)  

 Which number is a factor of 12





Answer: 2


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

12 ÷ 5 = 3 R 2     No
12 ÷ 8 = 2 R 4     No
12 ÷ 7 = 2 R 5     No
12 ÷ 3 = 4 R 0    Yes, 4 divides evenly


3 divides evenly into 12, so 3 is a factor.

 



4)  

 Which number is a factor of 3





Answer: 4


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

3 ÷ 5 = 3 R 2     No
3 ÷ 8 = 2 R 2     No
3 ÷ 6 = 2 R 0     No
3 ÷ 1 = 3 R 0    Yes, 3 divides evenly


3 divides evenly into 3, so 3 is a factor.

 



5)  

 Which number is a factor of 15





Answer: 2


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

15 ÷ 4 = 3 R 3     No
15 ÷ 6 = 2 R 3     No
15 ÷ 7 = 2 R 1     No
15 ÷ 3 = 5 R 0    Yes, 5 divides evenly


5 divides evenly into 15, so 5 is a factor.

 



6)  

 Which number is a factor of 12





Answer: 1


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

12 ÷ 5 = 3 R 2     No
12 ÷ 8 = 2 R 4     No
12 ÷ 7 = 2 R 5     No
12 ÷ 3 = 4 R 0    Yes, 4 divides evenly


3 divides evenly into 12, so 3 is a factor.

 



7)  

 Which number is a factor of 3





Answer: 3


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

3 ÷ 5 = 3 R 2     No
3 ÷ 8 = 2 R 2     No
3 ÷ 6 = 2 R 0     No
3 ÷ 1 = 3 R 0    Yes, 3 divides evenly


3 divides evenly into 3, so 3 is a factor.

 



8)  

 Which number is a factor of 15





Answer: 3


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

15 ÷ 4 = 3 R 3     No
15 ÷ 6 = 2 R 3     No
15 ÷ 7 = 2 R 1     No
15 ÷ 5 = 3 R 0    Yes, 3 divides evenly


3 divides evenly into 15, so 3 is a factor.

 



9)  

 Which number is a factor of 12





Answer: 2


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

12 ÷ 5 = 3 R 2     No
12 ÷ 8 = 2 R 4     No
12 ÷ 7 = 2 R 5     No
12 ÷ 3 = 4 R 0    Yes, 4 divides evenly


3 divides evenly into 12, so 3 is a factor.

 



10)  

 Which number is a factor of 3





Answer: 4


SOLUTION 1 :

Remember:

A number is a factor if it divides evenly.

Divide all the numbers into 15, and see which one divides evenly.

3 ÷ 5 = 3 R 2     No
3 ÷ 8 = 2 R 2     No
3 ÷ 6 = 2 R 0     No
3 ÷ 1 = 3 R 0    Yes, 3 divides evenly


3 divides evenly into 3, so 3 is a factor.