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?
In these multiplication and division games, you'll need to think strategically to get closest to the target.
A game in which players take it in turns to choose a number. Can you block your opponent?
15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?
Can you find six numbers to go in the daisy from which you can make all the numbers from 1 to a number bigger than 25?
Try entering different sets of numbers in the number pyramids. How does the total at the top change?
Can you arrange these numbers into 7 subsets, each of three numbers, so that when the numbers in each are added together, they make seven consecutive numbers?
Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?
Can you find a way to identify times tables after they have been shifted up or down?
Follow this recipe for sieving numbers and see what interesting patterns emerge.
I'm thinking of a rectangle with an area of 24. What could its perimeter be?
Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
Can you figure out how sequences of beach huts are generated?
By selecting digits for an addition grid, what targets can you make?
In the 2020 Olympic Games, sport climbing was introduced for the first time, and something very interesting happened with the scoring system. Can you find out what was interesting about it?
When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...
If you move the tiles around, can you make squares with different coloured edges?
A 2 by 3 rectangle contains 8 squares and a 3 by 4 rectangle contains 20 squares. What sizes of rectangle contain exactly 100 squares? Can you find them all?
Start with two numbers and generate a sequence where the next number is the mean of the last two numbers...
If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?
