List

Primary summer challenges 2023

We have a challenge a day for you throughout the summer break...

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Each weekday, from 10 July to 1 September, a new problem or game will appear on this page.

After you've had a go at the day's challenge you may be able to compare your approach to the solutions we have published, which are based on students' work. 

You can also find Secondary Summer Challenges 2023.

 

Sealed Solution
problem

Sealed solution

Age
7 to 11
Challenge level
filled star filled star empty star
Ten cards are put into five envelopes so that there are two cards in each envelope. The sum of the numbers inside it is written on each envelope. What numbers could be inside the envelopes?
Fifteen cards
problem

Fifteen cards

Age
7 to 11
Challenge level
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Can you use the information to find out which cards I have used?
Roll these Dice
problem

Roll these dice

Age
7 to 11
Challenge level
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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 Sequences
problem

Domino sequences

Age
5 to 7
Challenge level
filled star empty star empty star
Find the next two dominoes in these sequences.
Factor track
problem

Factor track

Age
7 to 11
Challenge level
filled star filled star empty star
Factor track is not a race but a game of skill. The idea is to go round the track in as few moves as possible, keeping to the rules.
Add 3 Dice
problem

Add 3 dice

Age
7 to 11
Challenge level
filled star filled star empty star
Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do this?
Biscuit Decorations
problem

Biscuit decorations

Age
5 to 7
Challenge level
filled star empty star empty star
Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?
problem

Teddy Town - part two

Age
5 to 11
Challenge level
filled star filled star empty star

There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

problem

Teddy Town - part five

Age
5 to 11
Challenge level
filled star filled star empty star

There are thirty six teddies in Teddy Town - six red, six blue, six yellow, six green, six purple and six turquoise. There are also thirty six houses, six of each colour. Can you put them on the map of Teddy Town according to the rules?

problem

Teddy Town - part three

Age
5 to 11
Challenge level
filled star filled star empty star

There are sixteen teddies in Teddy Town - four red, four blue, four yellow and four green. There are also sixteen houses, four of each colour. Can you put them on the map of Teddy Town according to the rules?

problem

Teddy Town - part four

Age
5 to 11
Challenge level
filled star filled star empty star

There are twenty five teddies in Teddy Town - five red, five blue, five yellow, five green and five purple. There are also twenty five houses, five of each colour. Can you put them on the map of Teddy Town according to the rules?

problem

Teddy Town

Age
5 to 11
Challenge level
filled star filled star empty star

There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

Sets of Numbers
problem

Sets of numbers

Age
7 to 11
Challenge level
filled star filled star empty star
How many different sets of numbers with at least four members can you find in the numbers in this box?
Square Corners
problem

Square corners

Age
7 to 11
Challenge level
filled star empty star empty star

What is the greatest number of counters you can place on the grid below without four of them lying at the corners of a square?

Skip Counting
problem

Skip counting

Age
5 to 7
Challenge level
filled star empty star empty star
Find the squares that Froggie skips onto to get to the pumpkin patch. She starts on 3 and finishes on 30, but she lands only on a square that has a number 3 more than the square she skips from.
More Less is More
problem

More less is more

Age
7 to 14
Challenge level
filled star empty star empty star
In each of these games, you will need a little bit of luck, and your knowledge of place value to develop a winning strategy.
Seeing Squares
problem

Seeing squares

Age
5 to 11
Challenge level
filled star empty star empty star

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

Family Tree
problem

Family tree

Age
7 to 11
Challenge level
filled star filled star filled star
Use the clues to find out who's who in the family, to fill in the family tree and to find out which of the family members are mathematicians and which are not.
A City of Towers
problem

A city of towers

Age
5 to 7
Challenge level
filled star empty star empty star

In this town, houses are built with one room for each person. There are some families of seven people living in the town. In how many different ways can they build their houses?

Seven Flipped
problem

Seven flipped

Age
7 to 11
Challenge level
filled star filled star filled star
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
4 Dom
problem

4 dom

Age
5 to 11
Challenge level
filled star filled star filled star
Use these four dominoes to make a square that has the same number of dots on each side.
Less is More
problem

Less is more

Age
7 to 11
Challenge level
filled star empty star empty star
Use your knowledge of place value to try to win this game. How will you maximise your score?
problem

Robot monsters

Age
5 to 7
Challenge level
filled star empty star empty star

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

First Connect Three
problem

First connect three

Age
7 to 11
Challenge level
filled star empty star empty star
Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?
Got It
problem

Got it

Age
7 to 14
Challenge level
filled star filled star empty star

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.

Junior Frogs
problem

Junior frogs

Age
5 to 11
Challenge level
filled star filled star empty star
Have a go at this well-known challenge. Can you swap the frogs and toads in as few slides and jumps as possible?
Coded hundred square
problem

Coded hundred square

Age
7 to 11
Challenge level
filled star empty star empty star
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
Make 37 Poster
problem

Make 37

Age
5 to 11
Challenge level
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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?

Incey Wincey Spider
problem

Incey Wincey Spider

Age
5 to 7
Challenge level
filled star empty star empty star

You'll need two dice to play this game against a partner. Will Incey Wincey make it to the top of the drain pipe or the bottom of the drain pipe first?

Nim-7
problem

Nim-7

Age
5 to 11
Challenge level
filled star empty star empty star
Can you work out how to win this game of Nim? Does it matter if you go first or second?
Tangrams
problem

Tangrams

Age
5 to 11
Challenge level
filled star filled star empty star

Can you make five differently sized squares from the interactive tangram pieces?

problem

Four triangles puzzle

Age
5 to 11
Challenge level
filled star empty star empty star

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Making Sticks
problem

Making sticks

Age
5 to 7
Challenge level
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Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
Missing Middles
problem

Missing middles

Age
5 to 7
Challenge level
filled star filled star empty star
Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of three dominoes?
Two-digit targets
problem

Two-digit targets

Age
5 to 7
Challenge level
filled star empty star empty star

You have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?

Shape Times Shape
problem

Shape times shape

Age
7 to 11
Challenge level
filled star empty star empty star

These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?

Two flowers with the numbers 15 and 16 on them
problem

Butterfly flowers

Age
5 to 7
Challenge level
filled star empty star empty star

Can you find two butterflies to go on each flower so that the numbers on each pair of butterflies adds to the number on their flower?

Dozens
problem

Dozens

Age
7 to 14
Challenge level
filled star empty star empty star

Can you select the missing digit(s) to find the largest multiple?

Sort the Street
problem

Sort the street

Age
5 to 7
Challenge level
filled star empty star empty star

Sort the houses in my street into different groups. Can you do it in any other ways?

Mystery Matrix
problem

Mystery matrix

Age
7 to 11
Challenge level
filled star filled star empty star
Can you fill in this table square? The numbers 2 -12 were used to generate it with just one number used twice.
3 blocks towers
problem

Three block towers

Age
5 to 7
Challenge level
filled star filled star empty star

Take three differently coloured blocks - maybe red, yellow and blue. Make a tower using one of each colour. How many different towers can you make?