1 out of 3
Here is a chance to play a version of the classic Countdown Game.
1 out of 3
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
1 out of 3
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
1 out of 3
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
1 out of 3
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
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In each of these games, you will need a little bit of luck and your knowledge of place value to develop a winning strategy.
2 out of 3
Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?
2 out of 3
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?
2 out of 3
Take three consecutive numbers and add them together. What do you notice?
3 out of 3
We start with one yellow cube and build around it to make a 3×3×3 cube with red cubes. Then we build around that red cube with blue cubes and so on. How many cubes of each colour have we used?
