The DAV Class 5 Maths Book Solutions Pdf and **DAV Class 5 Maths Chapter 3 Worksheet 8** Solutions of Multiples and Factors offer comprehensive answers to textbook questions.

## DAV Class 5 Maths Ch 3 Worksheet 8 Solutions

Question 1.

Tick (✓) the correct answer.

(a) Prime factorisation of 28 is

Solution:

(b) Prime factorisation of 42 is

Solution:

(c) Prime factorisation of 36 is

Solution:

(d) Prime factorisation of 84 is

Solution:

Question 2.

State the answer in Yes or No.

(a) The prime factorisation of 15 is 3 × 5. _______

Solution:

Yes

(b) The prime factorisation of 50 is 2 × 5 × 5. _______

Solution:

Yes

(c) The prime factorisation of 90 is 2 × 5 × 9. _________

Solution:

No

Prime factorisation of 90 : 2 × 3 × 3 × 5

(d) The prime factorisation of 99 is 3 × 3 × 11. _______

Solution:

Yes

(e) The prime factorisation of 63 is 7 × 9. ________

Solution:

No

Prime factorisation of 63 : 3 × 3 × 7

(f) The prime factorisation of 54 is 2 × 27. ________

Solution:

No

Prime factorisation of 54 : 2 × 3 × 3 × 3

**DAV Class 5 Maths Chapter 3 Worksheet 8 Notes**

15 can be written in different ways.

15 = 1 × 15

15 = 1 × 3 × 5

All the factors are not prime.

15 = 3 × 5 → Factors are prime only.

Factorisation in which every factor is prime is called the Prime factorisation of the number.