Math Squares Puzzles for Adults: 101 Math Squares - Perfect Brain Training

Math Squares Puzzles for Adults: 101 Math Squares - Perfect Brain Training

300 Math CrossWord Puzzles: Addition, Subtraction, Multiplication, and Division Puzzles | Criss Cross Challenges for Kids & Adults

Maths Puzzles For Adults - Addition, Subtraction, Multiplication, Division - Large Print Volume 1: Cross Number Puzzle Book - Logic Games