This activity focuses on rounding to the nearest 10.
Can you work out how to balance this equaliser? You can put more than one weight on a hook.
Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?
Ben and his mum are planting garlic. Use the interactivity to help you find out how many cloves of garlic they might have had.
The Red Express Train usually has five red carriages. How many ways can you find to add two blue carriages?
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
Lorenzie was packing his bag for a school trip. He packed four shirts and three pairs of pants. "I will be able to have a different outfit each day", he said. How many days will Lorenzie be away?
Imagine that the puzzle pieces of a jigsaw are roughly a rectangular shape and all the same size. How many different puzzle pieces could there be?
My briefcase has a three-number combination lock, but I have forgotten the combination. I remember that there's a 3, a 5 and an 8. How many possible combinations are there to try?
In this maze of hexagons, you start in the centre at 0. The next hexagon must be a multiple of 2 and the next a multiple of 5. What are the possible paths you could take?
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
You cannot choose a selection of ice cream flavours that includes totally what someone has already chosen. Have a go and find all the different ways in which seven children can have ice cream.
Nina must cook some pasta for 15 minutes but she only has a 7-minute sand-timer and an 11-minute sand-timer. How can she use these timers to measure exactly 15 minutes?
These activities lend themselves to systematic working in the sense that it helps if you have an ordered approach.
When newspaper pages get separated at home we have to try to sort them out and get things in the correct order. How many ways can we arrange these pages so that the numbering may be different?
Can you find out in which order the children are standing in this line?
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
You have 4 red and 5 blue counters. How many ways can they be placed on a 3 by 3 grid so that all the rows columns and diagonals have an even number of red counters?
Six friends sat around a circular table. Can you work out from the information who sat where and what their profession were?
In this problem it is not the squares that jump, you do the jumping! The idea is to go round the track in as few jumps as possible.
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?
These activities focus on finding all possible solutions so if you work in a systematic way, you won't leave any out.
Let's suppose that you are going to have a magazine which has 16 pages of A5 size. Can you find some different ways to make these pages? Investigate the pattern for each if you number the pages.
These activities lend themselves to systematic working in the sense that it helps to have an ordered approach.
The Vikings communicated in writing by making simple scratches on wood or stones called runes. Can you work out how their code works using the table of the alphabet?
A merchant brings four bars of gold to a jeweller. How can the jeweller use the scales just twice to identify the lighter, fake bar?
Use the clues to work out which cities Mohamed, Sheng, Tanya and Bharat live in.
How many trains can you make which are the same length as Matt's, using rods that are identical?
Use the information to describe these marbles. What colours must be on marbles that sparkle when rolling but are dark inside?
Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?
Moira is late for school. What is the shortest route she can take from the school gates to the entrance?
Make a pair of cubes that can be moved to show all the days of the month from the 1st to the 31st.
Seven friends went to a fun fair with lots of scary rides. They decided to pair up for rides until each friend had ridden once with each of the others. What was the total number rides?
Sitting around a table are three girls and three boys. Use the clues to work out were each person is sitting.
Here are some rods that are different colours. How could I make a dark green rod using yellow and white rods?
Place the numbers 1 to 8 in the circles so that no consecutive numbers are joined by a line.
Your challenge is to find the longest way through the network following this rule. You can start and finish anywhere, and with any shape, as long as you follow the correct order.
Find out what a "fault-free" rectangle is and try to make some of your own.
The Zargoes use almost the same alphabet as English. What does this birthday message say?
Only one side of a two-slice toaster is working. What is the quickest way to toast both sides of three slices of bread?
A game for 2 people. Take turns placing a counter on the star. You win when you have completed a line of 3 in your colour.
Exactly 195 digits have been used to number the pages in a book. How many pages does the book have?
This tricky challenge asks you to find ways of going across rectangles, going through exactly ten squares.
What is the smallest number of jumps needed before the white rabbits and the grey rabbits can continue along their path?
This challenge, written for the Young Mathematicians' Award, invites you to explore 'centred squares'.
My coat has three buttons. How many ways can you find to do up all the buttons?
Is it possible to place 2 counters on the 3 by 3 grid so that there is an even number of counters in every row and every column? How about if you have 3 counters or 4 counters or....?
These activities focus on finding all possible solutions so working in a systematic way will ensure none are left out.
This train line has two tracks which cross at different points. Can you find all the routes that end at Cheston?
If you hang two weights on one side of this balance, in how many different ways can you hang three weights on the other side for it to be balanced?