CBSE Class 5 Mathematics Prime Numbers Worksheet

Q1 Fill in the blanks:

a) The number which is neither prime nor composite is ______________________ .

b) The smallest odd prime number is _________________________ .

c) A prime number has ________________ factors.

d) Prime numbers between 40 and 60 are ____________________________.

e) If a number is divisible by 6, it must be divisible by 2 and ______________ both.

f) All even numbers are divisible by _____________ .

Q2 Fun while learn--- Let’s DECODE:

The buttons of a mobile phone have numbers with the letters of the English alphabets.

Relating the letter with the number, solve the problems given alongside:

1. (a) The prime numbers between 1 and 10 are ………………………………………

(b) The even numbers between 11 and 21 are ………………………………………

(c) The composite numbers between 20 and 30 are ……..…………………………...

(d) The odd numbers between 30 and 40 are …...………………..…………………..

2. Write the next four multiples of each of the following.

(a) 12 → 12,24,36,48, -----------, -------------, --------------, --------------

(b) 18 → 18,36,54,72, -----------, -------------, --------------, --------------

(c) 20 → 20,40,60,80 -----------, -------------, --------------, --------------

3. Is 144 a multiple of 9? Give reasons.

4. I am a number between 40 and 50. I am a multiple number of 9 and a multiple number of 15. What number am I?

5. 15x 12=180 means ------------ is a multiple of --------- and -------------