Divisibility rules for 9

How can you quickly determine if a number is divisible by 9? In this video, I cover divisibility rules
Check out
Divisibility Rules 2-10
The trick is to add the numbers together and determine if this number is divisible by 9.
For example, is 36 divisible by 9?
3 plus 6 equals 9 and 9 is divisible by 9, therefore 36 is divisible by 9.

[vrindagupta]

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[yourwish]

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