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Weekly Problem 32 - 2015
Can you work out the missing numbers in this multiplication magic square?

What fraction of the volume of this can is filled with lemonade?

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

Does this 'trick' for calculating multiples of 11 always work? Why or why not?

What is the smallest number of answers you need to reveal in order to work out the missing headers?

If everyone in your class picked a number from 1 to 225, do you think any two people would pick the same number?

Use your logical thinking skills to deduce how much Dan's crisps and ice cream cost altogether.

Look at the mathematics that is all around us - this circular window is a wonderful example.

How will you work out which numbers have been used to create this multiplication square?

This big box multiplies anything that goes inside it by the same number. If you know the numbers that come out, what multiplication might be going on in the box?