Chapter 3: Playing With NumbersIntroduction
Factors and Multiples
Prime and Composite Numbers
Even and Odd numbers
Tests for Divisibility of Numbers
Prime Factorisation
Common Factors and Common Multiples
Exercise 3.1
Exercise 3.2
Exercise 3.3
Exercise 3.4
Exercise 3.5
Exercise 3.6
Exercise 3.7
What Have We Discussed?
Enhanced Curriculum Support
Easy Level Worksheet
Moderate Level Worksheet
Hard Level Worksheet
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1. Find the LCM and HCF of the following numbers?
(i) 15, 24 (ii) 8, 25 (iii) 12, 48
Check their relationship.
2. If the LCM of two numbers is 216 and their product is 7776, what will be its HCF?
3. The product of two numbers is 3276. If their HCF is 6, find their LCM?
4. The HCF of two numbers is 6 and their LCM is 36. If one of the numbers is 12, find the other?