Posted by tryston on Thursday, February 10, 2011 at 4:07pm.
every student in a second grade class sends a valentine to each of the other students in the class, for a total of 306 valentines.How many students are in the class.

5tth grade math  Ms. Sue, Thursday, February 10, 2011 at 4:22pm
The square root of 306 is about 17.5.
So I multiplied 17 * 17 and got 289 Valentines.
There must be 18 students in the class  and the each sent 17 cards.

5tth grade math  alex, Thursday, February 10, 2011 at 6:02pm
i need help on extended response

5tth grade math  Anonymous, Thursday, February 11, 2016 at 12:49pm
18 Students is the answer you exclude the student passing out the Valentines. So 18 students received 17 valentines...
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