Can you each work out the number on your card? What do you notice? How could you sort the cards?
Use the information about Sally and her brother to find out how many children there are in the Brown family.
Can you place the blocks so that you see the reflection in the picture?
Here are four cubes joined together. How many other arrangements of four cubes can you find? Can you draw them on dotty paper?
Can you describe a piece of paper clearly enough for your partner to know which piece it is?
Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only.
This problem shows that the external angles of an irregular hexagon add to a circle.
What fraction of the black bar are the other bars? Have a go at this challenging task!
Is it possible to have a tetrahedron whose six edges have lengths 10, 20, 30, 40, 50 and 60 units?
What is the greatest volume you can get for a rectangular (cuboid) parcel if the maximum combined length and girth are 2 metres?
