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Dice and Spinner Numbers

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Function Machines

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

Function machine: add 3, multiply by 5, take away 2. Numbers in are 5, 7 and 4


This one is a bit more of a puzzle.
Function machine. Numbers in: 2, 3, 4, 5. Numbers out in same order: 22, 28, 34, 40

Can you work out what happens in the three circles?