problem
Favourite
Biscuit decorations
Age
5 to 7
Challenge level
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
Favourite
Dotty six
Age
5 to 11
Challenge level
Dotty Six is a simple dice game that you can adapt in many ways.
problem
Favourite
Make 37
Age
5 to 11
Challenge level
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?
game
Favourite
The remainders game
Play this game and see if you can figure out the computer's chosen number.
problem
Favourite
Number differences
Age
7 to 11
Challenge level
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?
problem
Favourite
Shape times shape
Age
7 to 11
Challenge level
These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?
problem
Favourite
First connect three
Age
7 to 11
Challenge level
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?
problem
Cows and sheep
Age
7 to 11
Challenge level
Use your logical reasoning to work out how many cows and how many
sheep there are in each field.
problem
Favourite
Magic Vs
Age
7 to 11
Challenge level
Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?
problem
Favourite
Nice or nasty
Age
7 to 14
Challenge level
There are nasty versions of this dice game but we'll start with the nice ones...
problem
Favourite
Play to 37
Age
7 to 11
Challenge level
In this game for two players, the idea is to take it in turns to choose 1, 3, 5 or 7. The winner is the first to make the total 37.
problem
Favourite
Shapes on the playground
Age
7 to 11
Challenge level
Sally and Ben were drawing shapes in chalk on the school playground. Can you work out what shapes each of them drew using the clues?
problem
Favourite
Mystery matrix
Age
7 to 11
Challenge level
Can you fill in this table square? The numbers 2 -12 were used to generate it with just one number used twice.
problem
Favourite
Factor lines
Age
7 to 14
Challenge level
Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.
problem
Favourite
Four go
Age
7 to 11
Challenge level
This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?
problem
Favourite
Two and two
Age
7 to 16
Challenge level
How many solutions can you find to this sum? Each of the different letters stands for a different number.