ISBN-13: 9781535461894 / Angielski / Miękka / 2016 / 106 str.
A book filled with fun and new numerical puzzles made to activate the brain Search for 12 missing numbers in a 6x6 table. Numbers range from 0 to 9, making a challenging, yet workable puzzle for ages 7 and up These puzzles could be as a contest in classrooms to help solidify students core requirements.