
problem
Charitable pennies
Investigate the different ways that fifteen schools could have given money in a charity fundraiser.
Does this 'trick' for calculating multiples of 11 always work? Why or why not?
Your vessel, the Starship Diophantus, has become damaged in deep space. Can you use your knowledge of times tables and some lightning reflexes to survive?
This task offers an opportunity to explore all sorts of number relationships, but particularly multiplication.
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?