When can I use this method?
For dividing any 2-digit number by 9.
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- When the sum of the 2 digits is ≥ 9, further divide the sum using this method until you get the sum < 9. Add each Quotient you get along the way to get the final Quotient.
- If the sum of the 2 digits is = 9, add 1 to the Quotient and the Remainder becomes 0.
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