# math CHAPTER 2.9 and CHAPTER 2.10 FORM 1 By Kelvin

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## Presentation Description

math CHAPTER 2.9 and CHAPTER 2.10 FORM 1 By Kelvin

## Presentation Transcript

### Mathematics – Form 1:

Mathematics – Form 1 Chapter 2.9 and 2.10 By Kelvin

### Common factors and highest common factors (HCF):

Common factors and highest common factors (HCF)

### Common factors and highest common factors (HCF):

Common factors and highest common factors (HCF)

### Common factors and highest common factors (HCF) :

Common factors and highest common factors (HCF) As same as factors (on chapter 2.4) Example of 6 and 12 Factors of 6: 1 , 2 , 3 , 6 Factors of 12: 1 , 2 , 3 , 4, 6 , 12 How to answer: The common factors of 6 and 12 are 1, 2, 3, 6 (full answer) The HCF of 6 and 12 are 6 (full answer) the biggest common factors

### Exercise (no solution):

Exercise (no solution) Find the common factors and HCF . (answer two question) 21 and 42 3, 6 and 12 25, 30 and 35 25, 50 and 100 20, 40 and 60 (find the sum) 30, 60 and 90 (find the sum)

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Summary

### Slide 8:

THANKS FOR SEE THIS CHAPTER…. THIS THE LAST OF THE CHAPTER 2.7 and 2.8…. NEXT LESSON (SCIENCE CHAPTER 2.4) IS COMING SOON AT 18/3/2016 …..