class 5 sa 1 revision paper (factors and multiples )

REVISION-2 FACTORS AND MULTIPLES                                                           CLASS: 5

      I.            Fill in the blanks:

                   i.            The number __________ is a factor of every number.

                 ii.            A prime number has exactly __________ factors.

              iii.            ____________ is a number that is neither prime nor composite.

              iv.            All even numbers are divisible by __________.

                 v.            Two prime numbers which differ by 2 are called __________ primes.

   II.            Do the following:

1.     List all the factors of :

i.                   24        ii. 74

2.     Find the prime factorisation of the given numbers by making factor tree:                                                                                                

                   i.            96

                 ii.            72

3.     Find the HCF of the following set of numbers using the successive division method:                                                                     

                   i.            248, 492

                 ii.            136, 170, 255

4.     Find the LCM of the following:

i.                   94,96

ii.                 48,72,108

5.     Find the largest number that divides 232 and 157 leaving a remainder of 7.

III.            State whether true or false:

i.                   Every number is a multiple of itself. (            )

ii.                 Every number is a multiple of 1. (         )

iii.              A factor of a number can be greater than the number. (         )

iv.              All even numbers are multiples of 2. (           )