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April 18, 2014

April 18, 2014

Posted by **Lhen** on Tuesday, September 7, 2010 at 3:11pm.

16 + 31= ( 1. 10 + 6) + (3.10 + 1)

= ( 1. 10 + 3. 10) + (6 + 1)

= (1+ 3) 10 + (6+ 1)

= 4 .10 + 7

= 47

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