Factors and multiples
problem
Favourite
What numbers can we make now?
Age
11 to 14
Challenge level
Imagine we have four bags containing numbers from a sequence. What numbers can we make now?
problem
Favourite
5 by 5 Mathdokus
Age
7 to 16
Challenge level
Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
problem
Favourite
4 by 4 Mathdokus
Age
7 to 14
Challenge level
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
problem
Favourite
Three neighbours
Age
7 to 14
Challenge level
Take three consecutive numbers and add them together. What do you notice?
game
Favourite
Dicey array
Watch the video of this game being played. Can you work out the rules? Which dice totals are good to get, and why?
problem
Favourite
Are you well balanced?
Age
5 to 7
Challenge level
Can you work out how to make each side of this balance equally balanced? You can put more than one weight on a hook.
problem
Favourite
Tables teaser
Age
5 to 7
Challenge level
How will you work out which numbers have been used to create this multiplication square?
problem
Favourite
Gabriel's problem
Age
11 to 14
Challenge level
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
problem
Favourite
Multiple surprises
Age
11 to 16
Challenge level
Sequences of multiples keep cropping up...