![Number match](/sites/default/files/styles/medium/public/thumbnails/content-id-6937-icon.png?itok=yALZ7u94)
problem
Number match
A task which depends on members of the group noticing the needs of others and responding.
![Strike it Out](/sites/default/files/styles/medium/public/thumbnails/content-id-6589-icon.gif?itok=PtQ_v8tW)
problem
Strike it Out
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
![4 Dom](/sites/default/files/styles/medium/public/thumbnails/content-00-09-letme2-icon.png?itok=CUtems6A)
problem
4 Dom
Use these four dominoes to make a square that has the same number of dots on each side.
![Planning a School Trip](/sites/default/files/styles/medium/public/thumbnails/content-id-6969-icon.png?itok=EHfUZY3X)
problem
Planning a School Trip
You are organising a school trip and you need to write a letter to parents to let them know about the day. Use the cards to gather all the information you need.
![Fifteen cards](/sites/default/files/styles/medium/public/thumbnails/content-id-7506-icon.png?itok=z3XnnkJh)
![Consecutive Numbers](/sites/default/files/styles/medium/public/thumbnails/content-97-11-bbprob2-icon.jpg?itok=C_UREbsv)
problem
Consecutive Numbers
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
![Which Scripts?](/sites/default/files/styles/medium/public/thumbnails/content-01-05-six1-icon.jpg?itok=iXHHiKpS)
problem
Which Scripts?
There are six numbers written in five different scripts. Can you sort out which is which?
![Number Differences](/sites/default/files/styles/medium/public/thumbnails/content-id-2790-icon.jpg?itok=19is85tw)
problem
Number Differences
Place the numbers from 1 to 9 in the squares below so that the difference between joined squares is odd. How many different ways can you do this?
![Magic Vs](/sites/default/files/styles/medium/public/thumbnails/content-id-6274-icon.png?itok=dRZNbkAI)
problem
Magic Vs
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
![Coded hundred square](/sites/default/files/styles/medium/public/thumbnails/content-id-6554-icon.png?itok=NQUPJ0QK)
problem
Coded hundred square
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
![Three neighbours](/sites/default/files/styles/medium/public/thumbnails/content-id-8108-icon.gif?itok=eZEBmBsF)
![Roll these Dice](/sites/default/files/styles/medium/public/thumbnails/content-98-10-bbprob2-icon.png?itok=cj85bw5d)
problem
Roll these Dice
Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?
![Domino Square](/sites/default/files/styles/medium/public/thumbnails/content-99-03-letme1-icon.png?itok=UxMI7cdW)
problem
Domino Square
Use the 'double-3 down' dominoes to make a square so that each side has eight dots.
![Amy's Dominoes](/sites/default/files/styles/medium/public/thumbnails/content-01-03-penta1-icon.png?itok=yIgH25d0)
problem
Amy's Dominoes
Amy has a box containing domino pieces but she does not think it is a complete set. Which of her domino pieces are missing?
![Got It](/sites/default/files/styles/medium/public/thumbnails/content-02-01-game1-icon.png?itok=YpX97D5X)
problem
Got It
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
![Make 37](/sites/default/files/styles/medium/public/thumbnails/content-03-10-penta1-icon.gif?itok=RCFWIUZI)
problem
Make 37
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
![Inky Cube](/sites/default/files/styles/medium/public/thumbnails/content-id-7241-icon.jpg?itok=RLwPEkH8)
problem
Inky Cube
This cube has ink on each face which leaves marks on paper as it is rolled. Can you work out what is on each face and the route it has taken?
![Watch the clock](/sites/default/files/styles/medium/public/thumbnails/content-00-01-penta2-icon.jpg?itok=dg4uLtYD)
problem
Watch the clock
During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?