Find the frequency distribution for ordinary English, and use it to help you crack the code.
If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
A country has decided to have just two different coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?
Can you find a way to identify times tables after they have been shifted up or down?
Can you work out which drink has the stronger flavour?
Invent a scoring system for a 'guess the weight' competition.
Move your counters through this snake of cards and see how far you can go. Are you surprised by where you end up?
Engage in a little mathematical detective work to see if you can spot the fakes.
The large rectangle is divided into quadrilaterals and triangles. Can you untangle what fractional part is represented by each of the ten numbered shapes?
How many different number families can you find?
