Addition and subtraction

problem
Here to there 1 2 3

Age

5 to 7

Challenge level

Move from the START to the FINISH by moving across or down to the next square. Can you find a route to make these totals?
problem
The tall tower

Age

5 to 7

Challenge level

As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
problem
Twizzle's journey

Age

5 to 7

Challenge level

Twizzle, a female giraffe, needs transporting to another zoo. Which route will give the fastest journey?
problem
Always, sometimes or never?

Age

5 to 11

Challenge level

Are these statements relating to odd and even numbers always true, sometimes true or never true?
problem
Number squares

Age

5 to 11

Challenge level

Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?
problem
I'm eight

Age

5 to 11

Challenge level

Find a great variety of ways of asking questions which make 8.
problem
Alphabet blocks

Age

5 to 11

Challenge level

These alphabet bricks are painted in a special way. A is on one brick, B on two bricks, and so on. How many bricks will be painted by the time they have got to other letters of the alphabet?
problem
Totality

Age

5 to 11

Challenge level

This is an adding game for two players. Can you be the first to reach the target?
problem
Street sequences

Age

5 to 11

Challenge level

Investigate what happens when you add house numbers along a street in different ways.
problem
Today's date - 01/06/2009

Age

5 to 11

Challenge level

What do you notice about the date 03.06.09? Or 08.01.09? This challenge invites you to investigate some interesting dates yourself.