Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?
Noah saw 12 legs walk by into the Ark. How many creatures did he see?
In how many ways could Mrs Beeswax put ten coins into her three puddings so that each pudding ended up with at least two coins?
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
Can you each work out the number on your card? What do you notice? How could you sort the cards?
Exactly 195 digits have been used to number the pages in a book. How many pages does the book have?
A game for 2 or more players. Practise your addition and subtraction with the aid of a game board and some dried peas!
Using the statements, can you work out how many of each type of rabbit there are in these pens?
This task, written for the National Young Mathematicians' Award 2016, invites you to explore the different combinations of scores that you might get on these dart boards.
There are 78 prisoners in a square cell block of twelve cells. The clever prison warder arranged them so there were 25 along each wall of the prison block. How did he do it?
Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?
Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?
Mrs Morgan, the class's teacher, pinned numbers onto the backs of three children. Use the information to find out what the three numbers were.
How would you count the number of fingers in these pictures?
There are 4 jugs which hold 9 litres, 7 litres, 4 litres and 2 litres. Find a way to pour 9 litres of drink from one jug to another until you are left with exactly 3 litres in three of the jugs.
On Planet Plex, there are only 6 hours in the day. Can you answer these questions about how Arog the Alien spends his day?
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
There are 44 people coming to a dinner party. There are 15 square tables that seat 4 people. Find a way to seat the 44 people using all 15 tables, with no empty places.
This problem is based on the story of the Pied Piper of Hamelin. Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!
Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?
Fill in the numbers to make the sum of each row, column and diagonal equal to 15.
As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
At the beginning of May Tom put his tomato plant outside. On the same day he sowed a bean in another pot. When will the two be the same height?
This magic square has operations written in it, to make it into a maze. Start wherever you like, go through every cell and go out a total of 15!
Can you put plus signs in so this is true? 1 2 3 4 5 6 7 8 9 = 99 How many ways can you do it?
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?
Can you draw a continuous line through 16 numbers on this grid so that the total of the numbers you pass through is as high as possible?
This is an adding game for two players.
Zumf makes spectacles for the residents of the planet Zargon, who have either 3 eyes or 4 eyes. How many lenses will Zumf need to make all the different orders for 9 families?
Arrange eight of the numbers between 1 and 9 in the Polo Square below so that each side adds to the same total.
Fill in the missing numbers so that adding each pair of corner numbers gives you the number between them (in the box).
Fill in the numbers to make the sum of each row, column and diagonal equal to 34. For an extra challenge try the huge American Flag magic square.
The clockmaker's wife cut up his birthday cake to look like a clock face. Can you work out who received each piece?
There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. Can you use the information given to find out how many eggs are in each basket?
Leah and Tom each have a number line. Can you work out where their counters will land? What are the secret jumps they make with their counters?
Twizzle, a female giraffe, needs transporting to another zoo. Which route will give the fastest journey?
Annie and Ben are playing a game with a calculator. What was Annie's secret number?
Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?
In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
This challenge is about finding the difference between numbers which have the same tens digit.
This challenge focuses on finding the sum and difference of pairs of two-digit numbers.
In this game for two players, the aim is to make a row of four coins which total one dollar.
Can you arrange 5 different digits (from 0 - 9) in the cross in the way described?
Claire thinks she has the most sports cards in her album. "I have 12 pages with 2 cards on each page", says Claire. Ross counts his cards. "No! I have 3 cards on each of my pages and there are. . . .
Can you follow the rule to decode the messages?
In this game for two players, the idea is to take it in turns to choose 1, 3, 5 or 7. The winner is the first to make the total 37.
Find the sum and difference between a pair of two-digit numbers. Now find the sum and difference between the sum and difference! What happens?
There were 22 legs creeping across the web. How many flies? How many spiders?
This task follows on from Build it Up and takes the ideas into three dimensions!
There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?