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MathXplosion, Ep 1: Magic 9s

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MathXplosion, Ep 1: Magic 9s

SUBJECTS:  Maths

YEARS:  5–6, 7–8


Follow these simple calculations to illustrate the special properties of the number 9.

Pick your favourite number between 1 and 9 and multiply that number by 3. Add 3 to your answer. Multiply the result by 3. Treat your two-digit answer as two separate numbers and add them together.

No matter what number you pick to start with, your answer will always be the same!


Acknowledgements

Video © GAPC Entertainment.


Date of broadcast: 23 Jul 2018


Copyright

Metadata © Australian Broadcasting Corporation and Education Services Australia Ltd 2012 (except where otherwise indicated). Digital content © Australian Broadcasting Corporation (except where otherwise indicated). Video © Australian Broadcasting Corporation (except where otherwise indicated). All images copyright their respective owners. Text © Australian Broadcasting Corporation and Education Services Australia is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).

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