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sharonashivak
sharonashivak asks:
Q:

what is a triangular number

My granddaughter has to draw the next two triangular numbers after 1,3,6,10.  I can't help her.  txs

Question asked after reading: http://www.education.com/topic/fourth-grade/mat...
In Topics: Helping my child with math
> 60 days ago

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