Free Subtraction Worksheets | Free Printable Worksheets - Edu Games Subtraction Games and Puzzles Arithmetic crossword The Arithmetic crossword puzzle maker creates a basic crossword worksheet for grade 1, 2, or 3. It is a puzzle with only adding and subtractions equations. Calcudoku Calcudoku is a combination of an arithmetic and logic puzzle. The rules are the same as sudoku, but you get clues.