Multiplication and division

problem
Six ten total

Age

7 to 11

Challenge level

This challenge combines addition, multiplication, perseverance and even proof.
problem
Six numbered cubes

Age

7 to 11

Challenge level

This task combines spatial awareness with addition and multiplication.
problem
Bundles of cubes

Age

7 to 11

Challenge level

Watch this animation. What do you notice? What happens when you try more or fewer cubes in a bundle?
game

Ducking and dividing

Age

7 to 11

Challenge level

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?
problem
St Ives

Age

7 to 11

Challenge level

How many people were going to St Ives?
problem
Sometimes we lose things

Age

7 to 11

Challenge level

Well now, what would happen if we lost all the nines in our number system? Have a go at writing the numbers out in this way and have a look at the multiplications table.
problem
The 24 game

Age

7 to 11

Challenge level

There are over sixty different ways of making 24 by adding, subtracting, multiplying and dividing all four numbers 4, 6, 6 and 8 (using each number only once). How many can you find?
problem
Sam's quick sum

Age

7 to 11

Challenge level

What is the sum of all the three digit whole numbers?
problem
Practice run

Age

7 to 11

Challenge level

Chandrika was practising a long distance run. Can you work out how long the race was from the information?
problem
Four goodness' sake

Age

7 to 11

Challenge level

Use 4 four times in a calculation. What answers can you get?