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?
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.
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
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.
Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?
Jennifer Piggott and the NRICH team introduce Nim-like games to help children think creatively in mathematics.
Here are two games you can play. Which offers the better chance of winning?
