Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?

Twizzle, a female giraffe, needs transporting to another zoo. Which route will give the fastest journey?

These caterpillars have 16 parts. What different shapes do they make if each part lies in the small squares of a 4 by 4 square?

Annie and Ben are playing a game with a calculator. What was Annie's secret number?

On Planet Plex, there are only 6 hours in the day. Can you answer these questions about how Arog the Alien spends his day?

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 find 2 butterflies to go on each flower so that the numbers on each pair of butterflies adds to the same number as the one on the flower?

This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?

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?

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

Can you each work out the number on your card? What do you notice? How could you sort the cards?

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 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?

Woof is a big dog. Yap is a little dog. Emma has 16 dog biscuits to give to the two dogs. She gave Woof 4 more biscuits than Yap. How many biscuits did each dog get?

There were 22 legs creeping across the web. How many flies? How many spiders?

Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.

Sam got into an elevator. He went down five floors, up six floors, down seven floors, then got out on the second floor. On what floor did he get on?

Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?

Can you hang weights in the right place to make the equaliser balance?

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?

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?

On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?

Fill in the numbers to make the sum of each row, column and diagonal equal to 15.

This challenge is about finding the difference between numbers which have the same tens digit.

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?

Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?

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. . . .

Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number.

Use these head, body and leg pieces to make Robot Monsters which are different heights.

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?

Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

How would you count the number of fingers in these pictures?

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?

Exactly 195 digits have been used to number the pages in a book. How many pages does the book have?

Investigate what happens when you add house numbers along a street in different ways.

Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?

Number problems at primary level that require careful consideration.

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?

Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?

Dotty Six game for an adult and child. Will you be the first to have three sixes in a straight line?

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?

Can you each work out the number on your card? What do you notice? How could you sort the cards?

Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.

Use the information about Sally and her brother to find out how many children there are in the Brown family.

Using the cards 2, 4, 6, 8, +, - and =, what number statements can you make?

There were chews for 2p, mini eggs for 3p, Chocko bars for 5p and lollypops for 7p in the sweet shop. What could each of the children buy with their money?

A game for 2 or more players. Practise your addition and subtraction with the aid of a game board and some dried peas!