Eggs in Baskets
Age 5 to 7
Challenge Level
There are three baskets, a brown one, a red one and a pink one, holding a total of 10 eggs. How many eggs are in each basket?
Heads and Feet
Age 5 to 7
Challenge Level
On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?
The Tall Tower
Age 5 to 7
Challenge Level
As you come down the ladders of the Tall Tower you collect useful spells. Which way should you go to collect the most spells?
Dotty Six
Age 5 to 11
Challenge Level
Dotty Six is a simple dice game that you can adapt in many ways.
Poly Plug Rectangles
Age 5 to 11
Challenge Level
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
4 Dom
Age 5 to 11
Challenge Level
Use these four dominoes to make a square that has the same number of dots on each side.
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?
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.
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?
Dicey Operations in Line
Age 7 to 11
Challenge Level
Who said that adding, subtracting, multiplying and dividing couldn't be fun?
Satisfying Four Statements
Age 7 to 11
Challenge Level
Can you find any two-digit numbers that satisfy all of these statements?
Coded Hundred Square
Age 7 to 11
Challenge Level
This 100 square jigsaw is written in code. It starts with 1 and ends with 100. Can you build it up?
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?
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.
Sealed Solution
Age 7 to 11
Challenge Level
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?
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?
Twenty Divided Into Six
Age 7 to 11
Challenge Level
Katie had a pack of 20 cards numbered from 1 to 20. She arranged the cards into 6 unequal piles where each pile added to the same total. What was the total and how could this be done?
The Remainders Game
Age 7 to 14
Challenge Level
Play this game and see if you can figure out the computer's chosen number.
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...
Number Lines in Disguise
Age 7 to 14
Challenge Level
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
NRICH is part of the family of activities in the Millennium Mathematics Project.