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Here's the problem again:

There are five friends. On Valentine's Day, every friend gives a valentine to each of the other friends. How many valentines are exchanged?

The answer is 20. And if this isn't the answer you got, figure out what you did wrong. For example, if you got 10, you want to be sure to count each valentine that you gave a friend as well as the valentine that friend gave you. If you got 25, remember that you don't give a valentine to yourself.

Redo the problem. Then use the text box to write what you did right or wrong the first time.

 

 
     

 

 

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