A set of 40 investigations into different types of numbers - Narcissistic, Kaprekan, Keith, Betrothed, Bell, Proth and many more. Each investigation explains something about the number being investigated & then sets a challenge for the students. All answers are from 1 to 100. Solutions on last 2 pages.
24 January 2021 Edit: 24 January 2021
Shared by Hans
Attribution: Thank you to Adam Spencer, Australian author of BIG BOOK of NUMBERS, who gave me permission to use many of the facts about different types of numbers. His book is a easy to read & understand, funny and informative for students.