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Finding the digit sum of a number is a helpful tool in checking the answer to arithmetic operations in Vedic math. This math video also covers a short cut, called “casting out the nines.” Very cool.
Again by the Visionary Math Educator Ms.Rebecca Newburn ( www.rebeccanewburn.com).


3 COMMENTS

  1. Yes, it is. 🙂 That’s the beauty of Vedic maths. It is simple.

    I teach junior high and the question my students always ask me is “why.” That’s why I made this video to give an explanation for casting out the 9s. I’d also love to hear any other mathematical explanations that allow us to cast out the 9s.

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