1.NUMBER SYSTEM- EXERCISE 1.3

Multiplication of integers-Introduction

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https://youtu.be/EW0qXqXv_cs 

Exercise 1.3 (sums 1 to 4)

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https://youtu.be/4ST_IOsjGnk

Exercise 1.3 (sums 5 to 11)

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https://youtu.be/BSwrQDWQVRs