c4 math eng

 class 4     sub - math 

1) write all the factors of 24 .

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

b) 6 , 8 ,12

2) write all the factors of 12 .

a) 1, 2 ,3 ,4 ,6 , 12 

b) 3, 6  ,12

3) 8 is the factor of ______.

a) 74

b) 72

4) 6 is the factor of ______.

a) 54

b) 55

5) prime factorisation of 50 is ______.

a) 2 x 5 x 5

b) 5 x 2 x 6

6) prime factorisation of 60  is ______.

a) 2 x 5 x 5

b) 5 x 2 x 6

7) every number is a multiple of ______.

a) 1

b) 2

8) Is 16 is a multiple of _____.

a) 30

b) 4

9)  Is 30  is a multiple of _____.

a) 6

b) 4

10) Find the H.C.F of 16 and 36  is _____.

a) 4

b) 6

11) Find the H.C.F of 20 and 30  is _____.

a) 12

b) 10

12) 45 is the divisible by _______.

a) 9

b) 6

13) 75 is not the divisible by ______.

a) 15

b) 13