BlackDog's Number Block Puzzles

BlackDog's Number Block Puzzles are lots of fun.  Print them out to play off-line.  They're great worksheets for school lessons, too.  Here's a sample:

Sample c. 2006 BlackDog http://blackdog.net

Solution c. 2006 BlackDog http://blackdog.net

To play, fill in the missing numbers.  In these puzzles, the missing numbers are integers between 0 and 9.  The numbers in each row add up to the totals to the right.  The numbers in each column add up to the totals along the bottom.  The diagonal lines also add up to the totals to the right.  See the sample and then choose some games from the list below.

More Math & Science Fun

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