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March 29, 2015

March 29, 2015

Posted by **deja** on Monday, December 1, 2008 at 10:18pm.

- math -
**Ms. Sue**, Monday, December 1, 2008 at 10:22pmIf you round the numbers and then add them, you'll be estimating.

Example: 27 + 51 is about 30 + 50. Since 3 + 5 = 8, then 30 + 50 is about 80.

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