Kakuro - cross-sums puzzle
Kakuro is a numeric crossword puzzle that uses sums.
You fill in the white space using digits 1 to 9. The little numbers indicate what the sum of the neighboring row or column of blocks should be. You cannot use the same digit twice in any sum, so for example 12 cannot be 4 + 4 + 4.
It is considered more challenging than Sudoku, but just as addictive to its fans!
I find it gives nice simple addition practice for elementary school kids, yet is fun. You can play some Kakuro games online here. Here's another site.
This game is immensely popular in Japan, according to Wikipedia.
You fill in the white space using digits 1 to 9. The little numbers indicate what the sum of the neighboring row or column of blocks should be. You cannot use the same digit twice in any sum, so for example 12 cannot be 4 + 4 + 4.
It is considered more challenging than Sudoku, but just as addictive to its fans!
I find it gives nice simple addition practice for elementary school kids, yet is fun. You can play some Kakuro games online here. Here's another site.
This game is immensely popular in Japan, according to Wikipedia.
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