In these addition and subtraction games, you'll need to think strategically to get closest to the target.
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
What is the smallest number of answers you need to reveal in order to work out the missing headers?
The Number Jumbler can always work out your chosen symbol. Can you work out how?
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
In these multiplication and division games, you'll need to think strategically to get closest to the target.
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?
On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?
