Saturday, November 10, 2012
Tuesday, November 6, 2012
Making ten first before adding
For example:
8 + 5 = 8 + 2=10 + 3=13
Sunday, November 4, 2012
Tuesday, October 9, 2012
Friday, September 14, 2012
Tuesday, August 28, 2012
Sunday, August 5, 2012
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