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Uploaded by alohabroward on Dec 16, 2008
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Education
Standard YouTube License
It's not difficult to +/- 11.
But it's nice to do arithmetics in mind. One number having in mind, other you hear, that's maybe more difficult than see two numbers on the screen.
dunedimensia 8 months ago
The indian kid is the only one doing it.
AparnasCakes 3 years ago
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It's not difficult to +/- 11.
But it's nice to do arithmetics in mind. One number having in mind, other you hear, that's maybe more difficult than see two numbers on the screen.
dunedimensia 8 months ago
The indian kid is the only one doing it.
AparnasCakes 3 years ago