List

Being resourceful - Upper Primary number

Biscuit Decorations
problem

Biscuit decorations

Age
5 to 7
Challenge level
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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?
Dotty Six
problem

Dotty six

Age
5 to 11
Challenge level
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Dotty Six is a simple dice game that you can adapt in many ways.

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?

Dicey Operations
game
Favourite

Dicey operations

Age
7 to 14
Challenge level
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In these addition and subtraction games, you'll need to think strategically to get closest to the target.

Number Differences
problem

Number differences

Age
7 to 11
Challenge level
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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?
Shape Times Shape
problem

Shape times shape

Age
7 to 11
Challenge level
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These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?

First Connect Three
problem

First connect three

Age
7 to 11
Challenge level
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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?
Cows and Sheep
problem

Cows and sheep

Age
7 to 11
Challenge level
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Use your logical reasoning to work out how many cows and how many sheep there are in each field.
Magic Vs
problem

Magic Vs

Age
7 to 11
Challenge level
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Can you put the numbers 1-5 in the V shape so that both 'arms' have the same total?

Nice or Nasty
problem

Nice or nasty

Age
7 to 11
Challenge level
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There are nasty versions of this dice game but we'll start with the nice ones...

Play to 37
problem

Play to 37

Age
7 to 11
Challenge level
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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.
The Remainders Game
game
Favourite

The remainders game

Age
7 to 14
Challenge level
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Play this game and see if you can figure out the computer's chosen number.

Shapes on the Playground
problem

Shapes on the playground

Age
7 to 11
Challenge level
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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?
Mystery Matrix
problem

Mystery matrix

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

Factor lines

Age
7 to 14
Challenge level
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Arrange the four number cards on the grid, according to the rules, to make a diagonal, vertical or horizontal line.

Four Go
problem

Four go

Age
7 to 11
Challenge level
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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?
Two and Two
problem

Two and two

Age
7 to 16
Challenge level
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How many solutions can you find to this sum? Each of the different letters stands for a different number.