HCF BY JUHI TANEJA AMARJIT KAUR Objectives 01

HCF BY JUHI TANEJA AMARJIT KAUR

Objectives 01 02 03 04 05 Students will be able to List the properties of the factors. Write the factors of the given number. Find common factors of the given number. Find highest common factors of the given number.

Recalling Factors(Quiz on Kahoot)

Pair Activity Use Different colour stickers to show the factors of 12 and 15 and answer the questions in the sheet provided.

Highest Common Factor (H. C. F. ) The highest common factor (HCF) of two whole numbers is the largest whole number which is a factor of both or in other words we can also say that it is the largest whole number which divides both of them exactly. It is also know as G. C. D. i. e. Greatest Common ______ (Fill in the most suitable word)

Write factors of 24 and 60 24 60 1 2 3 4 6 8 12 24 2 1 3 4 5 6 12 15 20 30 60 10

COMMON FACTORS 60 24 1 8 24 2 4 6 5 3 12 6 30 15 20 60

Factors of 36 and 84 have been listed below: Lets Try Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36. Factors of 84 are 1, 2, 3, 4, 6, 12, 14, 21, 42, 84. Which is the highest factor common to both 36 and 84?

Think it over! You are planning a party and want to give your guests return gifts. You have 24 chocolate bars and 36 lollipops. Let Blue chips represent chocolate bars and Yellow chips represent 36 lollipops. Using chips, find out the greatest number of return gifts you can make if each bag must have exactly the same number of chocolate bars and exactly the same number of lollipops? You do not want any candy left over. Explain.

Ø The HCF of two or more given numbers is the highest of their common _____. ØThe HCF of 12 and 15 is _____. Recap Ø Give example of two numbers whose HCF is 2. Ø Can HCF of two numbers be 1? If yes, give example

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