A large pack of 120 double sided cards. Each contains a puzzle with 4 numbers which must all be combined (with add, subtract, multiply or divide) to make the target number in the centre of card. There are 5 different levels of challenge: Set 1: Three single digit numbers Set 2: Four single digit numbers Set 3: Four numbers single and double digits Set 4: Four numbers one of which is a fraction Set 5: Four numbers one of which is unknown! It can be played by an individual ('how many can you solve in 5 minutes'?), in pairs or in groups. Players compete or collaborate to find the solution to the puzzle (or play solitaire). This is an excellent way to develop puzzling and problem solving skills with numbers. Players develop their skills as they solve more puzzles, as they work up to more challenging levels. For 1+ player Age 8+
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