Place value

This multiplication uses each of the digits 0 - 9 once and once only. Using the information given, can you replace the stars in the calculation with figures?

Choose four different digits from 1-9 and put one in each box so that the resulting four two-digit numbers add to a total of 100.

Try out these calculations. Are you surprised by the results?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

In each of these games, you will need a little bit of luck and your knowledge of place value to develop a winning strategy.

In this 100 square, look at the green square which contains the numbers 2, 3, 12 and 13. What is the sum of the numbers that are diagonally opposite each other? What do you notice?

Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?

How many solutions can you find to this sum? Each of the different letters stands for a different number.