Mathematicians are always looking for efficient methods for solving problems. How efficient can you be?
Can you find a way to identify times tables after they have been shifted up?
How could Penny, Tom and Matthew work out how many chocolates there
are in different sized boxes?
Many numbers can be expressed as the difference of two perfect squares. What do you notice about the numbers you CANNOT make?
Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?
Can you explain the surprising results Jo found when she calculated
the difference between square numbers?
This was a popular problem and many people have contributed to its
Go to last month's problems to see more solutions.
In this article Jenny talks about Assessing Pupils' Progress and
the use of NRICH problems.
The first of three articles on the History of Trigonometry. This takes us from the Egyptians to early work on trigonometry in China.
A game that tests your understanding of remainders.