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posted by Alexis on Tuesday, December 14, 2010 at 8:44pm.
The question reads: Reasoning: How can counting by 10's help you multiply by 10's?
10 * 2 = 20 10 * 3 = 30 10 * 4 = 40 10 * 5 = 50 Do you see the pattern? What is 10 times 9?
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