Roll These Dice
Age 7 to 11
Challenge Level
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?
Nim-7
Age 5 to 14
Challenge Level
Can you work out how to win this game of Nim? Does it matter if you go first or second?
Multiplication Tables - Matching Cards
Age 5 to 11
Challenge Level
Practise your tables skills and try to beat your previous best score in this interactive game.
Got It
Age 7 to 14
Challenge Level
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.
Matching Fractions, Decimals and Percentages
Age 7 to 14
Challenge Level
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
The Twelve Pointed Star Game
Age 7 to 11
Challenge Level
Have a go at this game which involves throwing two dice and adding their totals. Where should you place your counters to be more likely to win?
Board Block Challenge
Age 7 to 11
Challenge Level
Choose the size of your pegboard and the shapes you can make. Can you work out the strategies needed to block your opponent?
Diagonal Sums Sudoku
Age 7 to 16
Challenge Level
Solve this Sudoku puzzle whose clues are in the form of sums of the numbers which should appear in diagonal opposite cells.
Factors and Multiples Game
Age 7 to 16
Challenge Level
A game in which players take it in turns to choose a number. Can you block your opponent?
First Connect Three
Age 7 to 14
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?
Tug Harder!
Age 7 to 11
Challenge Level
In this game, you can add, subtract, multiply or divide the numbers on the dice. Which will you do so that you get to the end of the number line first?
The Remainders Game
Age 7 to 14
Challenge Level
Play this game and see if you can figure out the computer's chosen number.
NRICH is part of the family of activities in the Millennium Mathematics Project.