Did you know KenKen® means "wisdom squared" in Japanese? Help your second grader on his way to wisdom by printing out this puzzle! He'll use addition to decide where each number belongs. He'll also be working on his problem solving skills as he carefully considers every possibility. Here's how to play:

Using the digits 1-5 in this 5x5 puzzle, fill the small squares with digits so as not to repeat a digit in any row or column, and so that the digits within each heavily outlined area will equal that area’s corner number when combined using the indicated operation. For more information visit www.kenken.com.

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