Multiplication and division

problem

The 24 Game

Age

7 to 11

Challenge level

3 out of 3

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

3 out of 3

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

ABC

Age

7 to 11

Challenge level

3 out of 3

In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?
problem

Practice Run

Age

7 to 11

Challenge level

3 out of 3

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

Divide It Out

Age

7 to 11

Challenge level

3 out of 3

What is the lowest number which always leaves a remainder of 1 when divided by each of the numbers from 2 to 10?
problem

One Million to Seven

Age

7 to 11

Challenge level

3 out of 3

Start by putting one million (1 000 000) into the display of your calculator. Can you reduce this to 7 using just the 7 key and add, subtract, multiply, divide and equals as many times as you like?
problem

Charitable Pennies

Age

7 to 14

Challenge level

1 out of 3

Investigate the different ways that fifteen schools could have given money in a charity fundraiser.
problem

3 by 3 Mathdokus

Age

7 to 14

Challenge level

1 out of 3

Can you use the clues to complete these 3 by 3 Mathematical Sudokus?
problem

Escape From the Castle

Age

7 to 14

Challenge level

2 out of 3

Skippy and Anna are locked in a room in a large castle. The key to that room, and all the other rooms, is a number. The numbers are locked away in a problem. Can you help them to get out?
problem

St Ives

Age

7 to 14

Challenge level

2 out of 3

How many were going to St Ives?