Math Crossword Puzzles Printable and Free - K-8 -Worksheets ... Math Crossword Puzzles Free and Printable. These Math Crossword Puzzles cover key Common Core Academic Math Vocabulary (CCSS) that all students in grades K-8 should know. Teachers, parents, and students are welcome to print these out and make copies. Kindergarten CCSS Math Vocabulary Crosswords 1st Grade CCSS Math Vocabulary Crosswords