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September 30, 2014

September 30, 2014

Posted by **yc** on Monday, April 11, 2011 at 5:41pm.

- math -
**Ms. Sue**, Monday, April 11, 2011 at 5:51pmYou would need to regroup if you subtract 8 or 9 from 17.

http://www.mathsisfun.com/numbers/subtraction-regrouping.html

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