This addition and subtraction KenKen® puzzle is a perfect challenge!

Ready, set, go! Start the timer and get going on this one-minute math addition practice.

Kids solve addition and subtraction problems with one- and two-digit numbers to crack the code and find the mystery word on this first grade math worksheet.

Will your students help Tommy the Toucan solve this KenKen® puzzle? They'll need their addition and subtraction facts and the numbers 1 through 4.