1.NUMBER SYSTEM- EXERCISE 1.5

 

Sums 1,2

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https://youtu.be/luZMef49nHE

Sums 3,4

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https://youtu.be/Cd2SNntuZ-o

Sums 5,6

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https://youtu.be/w3zahf4ymyo

Sums 7,8 & 9

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https://youtu.be/G81pIEWY42U

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