## ML Aggarwal Class 6 Solutions for ICSE Maths Chapter 4 Playing with Numbers Ex 4.3

Question 1.

Here are two different factor trees of the number 90. Write the missing numbers:

Solution:

Question 2.

Find the prime factorisation of the following numbers:

(i) 72

(ii) 172

(in) 450

(iv) 980

(v) 8712

(vi) 13500

Solution:

Question 3.

Write the smallest and the greatest 3-digit numbers and express them as the product of prime.

Solution:

Question 4.

Write the smallest five digit number and express it in the form of its prime factors.

Solution:

Question 5.

1 am the smallest number, having four different prime factors. Can you find me?

Solution: