A simple visual exploration into halving and doubling.
Try out this number trick. What happens with different starting numbers? What do you notice?
Watch the video of this game being played. Can you work out the rules? Which dice totals are good to get, and why?
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick ten numbers from the bags so that their total is 37?
A hundred square has been printed on both sides of a piece of paper. What is on the back of 100? 58? 23? 19?
This problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?
What is the greatest number of squares you can make by overlapping three squares?
Here are shadows of some 3D shapes. What shapes could have made them?
This problem looks at how one example of your choice can show something about the general structure of multiplication.
Can you find all the ways to get 15 at the top of this triangle of numbers? Many opportunities to work in different ways.
