I love number puzzles. They always generate interest in class with students sharing their favourites. Each month I will share one of my old favourites, share any exciting new puzzles I come across and link to a mathematics puzzles list in which I will add an extra resource each month.
This months old favourite
Add 1 to the number of the month you were born
Multiply by 100
Add the day of the month you were born
Multiply by 2
Multiply by 5
Multiply by 10
Add your age
Take the result and subtract 11,111 the pairs of digits from the right give the student's age, day of month and the birth month.
I love Numberphile videos. In this video we are asked to add up all the digits of all the numbers from 1 to a million
Click here to link to the Mathematical Puzzles List
Why not reply to this post with your favourite puzzle?