Can you place the numbers from 1 to 10 in the grid?
If you can post the triangle with either the blue or yellow colour face up, how many ways can it be posted altogether?
Find out how we can describe the "symmetries" of this triangle and
investigate some combinations of rotating and flipping it.
Four children were sharing a set of twenty-four butterfly cards.
Are there any cards they all want? Are there any that none of them
There are ten children in Becky's group. Can you find a set of
numbers for each of them? Are there any other sets?
Sydney discovered that this problem was really about factors and multiples. Perhaps you can help find the last solutions?
Go to last month's problems to see more solutions.
Take it in turns to place a domino on the grid. One to be placed horizontally and the other vertically. Can you make it impossible for your opponent to play?