st patrick's day math activities for grade 6 - Mashup Math All of today's math puzzles are opposite day versions of the puzzles shared in our best-selling workbook: 101 Daily Math Challenges for Grades 1-8 Volume 2. Here are some samples from the book: Grades 1-3 Puzzle. Grades 4-5 Puzzle. Grades 6-8 Puzzle. Multiplication Table Puzzle.