Sudoku and Ken Ken enthusiasts will enjoy this mad math puzzle, full of addition, subtraction, multiplication, and division challenges.

If your child has a knack for number games, he'll love this mysterious math puzzle. Kids will use addition, subtraction, multiplication, and division skills.

Practice mixed operations with this fourth-grade math puzzle!

Do your students love puzzles? This one is a great introduction to KenKen®, a logic and math game from Japan.

Looking for a way to get your child excited about math? Try these math puzzles, a tricky but fun spin-off of the popular Ken Ken puzzle!

Hey math whizzes, here is a challenge for you! These math puzzles are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

Does your child need a little challenge in math and problem solving? These math puzzles are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

Calling all Sudoku and Ken Ken buffs, here's a little something new! These math puzzles are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

If your student needs a challenge in math, try these math puzzles! These math grids are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

Looking for a way to get your child excited about math? These math puzzles are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

Keep your amazing math student on his toes with some challenging puzzles! These math grids are tricky, but are a fun spin-off of the popular Ken Ken puzzle.

Calling all Sudoku and Ken Ken buffs, we have a new addicting puzzle for you! These are tricky, but a fun spin-off of the popular Ken Ken puzzle.