Three Neighbours
Take three consecutive numbers and add them together. What do you notice?
Take three consecutive numbers and add them together. What do you notice?
This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?
In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
Draw some angles inside a rectangle. What do you notice? Can you prove it?
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
It's easy to work out the areas of most squares that we meet, but what if they were tilted?