Posted by Siya on Tuesday, February 7, 2012 at 11:58pm.
Ming has 13 rocks. He puts them into 2 equal groups with some left over. How many rocks are in each group?

Math  Victoria, Wednesday, February 8, 2012 at 1:46am
Six rocks are in each group, with one rock leftover.
6(2) = 12 + 1 = 13

Math  Steve, Wednesday, February 8, 2012 at 5:35am
Of course, 6 is just the largest group size. He could have made two groups of 3, with 7 left over.
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