Find out what fills a room, but takes up no space, with this riddle and math combo worksheet. Use subtraction skills to solve the riddle on this math worksheet.

Review two-digit subtraction the fun way, with this subtraction crossword!

For basic math skills, try this awesome crossword puzzle, with a twist. It includes counting, adding, subtracting and spelling all in one!

Do your students like puzzles? Then they'll love helping Sammy the Seal solve this one!

Your students can use their knowledge of simple addition and subtraction facts to solve this KenKen® puzzle.

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.