How to Calculate Quickly: Full Course in Speed Arithmetic (Dover Books on Mathematics)

Big Book of Large Print Dot-to-Dots: Puzzles from 198 to 563 Dots (Dot to Dot Books For Adults)

Crocheting Adventures with Hyperbolic Planes: Tactile Mathematics, Art and Craft for all to Explore, Second Edition (AK Peters/CRC Recreational Mathematics Series)

Will Shortz Presents Wild for Sudoku: 200 Challenging Puzzles

Number Search Puzzle Book for Adults and Seniors: 100 Number Searches Puzzles with 2400 Numbers to Find

Mathematics, Magic and Mystery (Dover Math Games & Puzzles)

1,000 Playthinks: Puzzles, Paradoxes, Illusions & Games

Colossal Kakuro: 72 Titanically Tricky Puzzles

Perplexing Puzzles and Tantalizing Teasers (Dover Brain Games & Puzzles)

Brain Health Puzzles for Adults 2: Crosswords, Sudoku, and Other Puzzles That Give the Brain the Exercise It Needs