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5 Prime Time

Learning Objectives

After studying this chapter, students will be able to... Scan to learn
 explain the relationship between factors and multiples
 determine whether a number is a factor or multiple of another number
 solve problems involving factors and multiples
 explore the differences between prime numbers and composite numbers
 use factor tree and prime factorisation to find prime factors of a number
 identify numbers divisible by 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 without performing division
 find the common factors and HCF of numbers
 find the common multiplies and LCM of numbers

get ready!

Nitya and her friends are excited for the new topic that will be started in Maths period.

Friends, the maths
teacher will start a new
topic in next period. Yes Nitya, it is – 7, Great Mayur. Can anyone
Mayur, do you remember 14, 21, 28, 35, 42, say in which multiplication
the table of 7? 49, 56, 63, 70. tables the number 28 lies?

I know, the number
28 comes in the
multiplication tables of
1, 2, 4, 7, 14 and 28.

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