![Have you got it?](/sites/default/files/styles/medium/public/thumbnails/content-02-02-15plus2-icon.gif?itok=ZqujeQid)
![Dozens](/sites/default/files/styles/medium/public/thumbnails/content-98-03-six2-icon.png?itok=NzwxPabC)
![Two and Two](/sites/default/files/styles/medium/public/thumbnails/content-01-06-six2-icon.png?itok=r2AsNoHS)
problem
Two and Two
How many solutions can you find to this sum? Each of the different letters stands for a different number.
![American Billions](/sites/default/files/styles/medium/public/thumbnails/content-01-09-six5-icon.png?itok=jytZpqxV)
problem
American Billions
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
![Remainders](/sites/default/files/styles/medium/public/thumbnails/content-96-11-six4-icon.png?itok=5cZcyZQE)
problem
Remainders
I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?
![Cinema Problem](/sites/default/files/styles/medium/public/thumbnails/content-03-10-six1-icon.gif?itok=-Hhp0rJ9)
problem
Cinema Problem
A cinema has 100 seats. Show how it is possible to sell exactly 100 tickets and take exactly £100 if the prices are £10 for adults, 50p for pensioners and 10p for children.
![How Many Miles To Go?](/sites/default/files/styles/medium/public/thumbnails/how-many-miles-to-go-.gif?itok=s4ss-dDK)
problem
How Many Miles To Go?
How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?
![Peaches today, Peaches tomorrow...](/sites/default/files/styles/medium/public/thumbnails/content-id-2312-icon.png?itok=QobLRChL)
problem
Peaches today, Peaches tomorrow...
A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?
![Ben's Game](/sites/default/files/styles/medium/public/thumbnails/content-id-2382-icon.png?itok=Vi_9cC8A)
problem
Ben's Game
Ben, Jack and Emma passed counters to each other and ended with the same number of counters. How many did they start with?
![Product Sudoku](/sites/default/files/styles/medium/public/thumbnails/content-id-4903-icon.png?itok=VQGPrcYI)
problem
Product Sudoku
The clues for this Sudoku are the product of the numbers in adjacent squares.
![Factors and Multiples Puzzle](/sites/default/files/styles/medium/public/thumbnails/content-id-5448-icon.png?itok=OmzhsOJB)
problem
Factors and Multiples Puzzle
Using your knowledge of the properties of numbers, can you fill all the squares on the board?
![Fractions jigsaw](/sites/default/files/styles/medium/public/thumbnails/content-id-5467-icon.png?itok=zwPZDGJg)
![A Chance to Win?](/sites/default/files/styles/medium/public/thumbnails/content-id-5611-icon.png?itok=FWukIbfG)
problem
A Chance to Win?
Imagine you were given the chance to win some money... and imagine
you had nothing to lose...
![Method in multiplying madness?](/sites/default/files/styles/medium/public/thumbnails/content-id-5612-icon.png?itok=ZHpntMLH)
problem
Method in multiplying madness?
Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?
![Connect Three](/sites/default/files/styles/medium/public/thumbnails/content-id-5864-icon.jpg?itok=wTq5Aiim)
problem
Connect Three
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
![All in a jumble](/sites/default/files/styles/medium/public/thumbnails/content-id-5994-icon.png?itok=sVnQZK_y)
problem
All in a jumble
My measurements have got all jumbled up! Swap them around and see
if you can find a combination where every measurement is valid.
![Thousands and Millions](/sites/default/files/styles/medium/public/thumbnails/content-id-6046-icon.jpg?itok=ZEocVOwg)
![Power mad!](/sites/default/files/styles/medium/public/thumbnails/content-id-6401-icon.png?itok=Ukk2Xjef)
problem
Power mad!
Powers of numbers behave in surprising ways. Take a look at some of these and try to explain why they are true.
![Multiples Sudoku](/sites/default/files/styles/medium/public/thumbnails/content-id-6434-icon.jpg?itok=vjNndu-o)
problem
Multiples Sudoku
Each clue in this Sudoku is the product of the two numbers in adjacent cells.
![Keep it simple](/sites/default/files/styles/medium/public/thumbnails/keep-it-simple.gif?itok=xXs1GgR6)
![Countdown fractions](/sites/default/files/styles/medium/public/thumbnails/content-id-6564-icon.gif?itok=gMgDY9tV)
problem
Countdown fractions
Here is a chance to play a fractions version of the classic Countdown Game.
![Sticky Numbers](/sites/default/files/styles/medium/public/thumbnails/content-id-6571-icon.jpg?itok=gK-R2-2J)
problem
Sticky Numbers
Can you arrange the numbers 1 to 17 in a row so that each adjacent pair adds up to a square number?
![Doughnut percents](/sites/default/files/styles/medium/public/thumbnails/content-id-6945-icon.jpg?itok=KYyqyhQF)
problem
Doughnut percents
A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.
![Generating Triples](/sites/default/files/styles/medium/public/thumbnails/content-id-7282-icon.png?itok=rxebyRVc)
problem
Generating Triples
Sets of integers like 3, 4, 5 are called Pythagorean Triples, because they could be the lengths of the sides of a right-angled triangle. Can you find any more?
![Place your orders](/sites/default/files/styles/medium/public/thumbnails/content-id-7500-icon.gif?itok=JIvIbNSv)
problem
Place your orders
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?
![Nutrition and Cycling](/sites/default/files/styles/medium/public/thumbnails/content-id-7571-icon.png?itok=7GvnTgar)
problem
Nutrition and Cycling
Andy wants to cycle from Land's End to John o'Groats. Will he be able to eat enough to keep him going?
![Triathlon and Fitness](/sites/default/files/styles/medium/public/thumbnails/content-id-7586-icon.png?itok=ZumBOT28)
problem
Triathlon and Fitness
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?
![Magic Letters](/sites/default/files/styles/medium/public/thumbnails/content-id-7821-icon.png?itok=z67LWboP)
problem
Magic Letters
Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?
![Olympic Measures](/sites/default/files/styles/medium/public/thumbnails/content-id-8318-icon.png?itok=K-j1ORoN)
problem
Olympic Measures
These Olympic quantities have been jumbled up! Can you put them back together again?
![Add to 200](/sites/default/files/styles/medium/public/thumbnails/content-id-11110-icon.png?itok=uXY6xAeD)
![Number Lines in Disguise](/sites/default/files/styles/medium/public/thumbnails/content-id-13452-icon.jpg?itok=w1sVtOJy)
problem
Number Lines in Disguise
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
![More Less is More](/sites/default/files/styles/medium/public/thumbnails/content-id-15110-icon.png?itok=m_R_gqjG)
problem
More Less is More
In each of these games, you will need a little bit of luck, and your knowledge of place value to develop a winning strategy.