ARMY PUBLIC SCHOOL, GOLCONDA

WORKSHEET (FACTORS AND MULTIPLES)

SUBJECT: MATHEMATICS                                                                                   CLASS: V

1. If one number divides exactly into             another with no remainder, we say the second number is a multiple of the first number

Eg.  6 divides exactly into 12, therefore 12 is a multiple of 6.

       5 divides exactly into 45, therefore 45 is a multiple of 5.

Which of these statements are true and which are false? (put a tick mark for true and cross for false)

a) 16 is a multiple of 4                                    b) 42 is a multiple of 7

c) 15 is a multiple of 2                                    d) 100 is a multiple of 3

e) 40 is a multiple of 4 and 10                        f) 27 is a multiple of 3 and 9

2. Write three multiples of 7 smaller than 50.   ______________________________

3.  Circle the multiples of 6.   -   23,   50,       48,       24,       67,       30,       42

4.  Circle the factors of 45.     -   9,     90,       180,     7,         1,         15,       3,         5

5.  Write a multiple of 37 between 100 and 120.      _____________

6. Write the missing multiples

a)  7         ____   21     ____    ____    ____    ____    ____    ____

b)  4        ____ ____    ____    20        ____    ____    ____    ____

c)  99       88     ____    ____    ____    ____    ____    ____    11

d) 81       72     ____    ____    ____    ____    ____    ____    ____   

7.  Write the least prime number which is greater than 24.   _______

8.  Write the prime factorisation of the following numbers.

a) 356

b)120

10.  Find the H.C.F. of the following numbers by division method

a) 198 and 360                                    b) 40 and 76

11. Find L.C.M. by prime factorization

a) 12, 18, 25                                                                b) 16, 48