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Posted on Apr 03, 2011

Ramon like to collect rocks.he has 72 rocks in his collection.he gives 33 rocks away. now he thinks he has about 50 rocks. is he right? 72 rounds to----and 33 round to-----.so romon has about-----rocks.

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  • Posted on Apr 03, 2011
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Rounding 72 to the nearest ten gives 70, 33 to the nearest ten - 30, so he thinks correctly by assuming that he has 50 rocks.

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