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Four-digit Targets
Fifteen Cards
Factor-multiple Chains
Trial and Improvement
Trial and Improvement
Simply 'having a go' is a great way to make a start on a mathematical problem. Whatever happens, you will have learnt more about the situation and can then tweak your approach. These activities all lend themselves to this 'trial and improvement' way of working.
Four-digit Targets Age 7 to 11Challenge Level 
Age 7 to 11
Challenge Level
You have two sets of the digits 0-9. Can you arrange these in the five boxes to make four-digit numbers as close to the target numbers as possible?
Fifteen Cards Age 7 to 11Challenge Level
Age 7 to 11
Challenge Level
Can you use the information to find out which cards I have used?
Factor-multiple Chains Age 7 to 11Challenge Level
Age 7 to 11
Challenge Level
Can you see how these factor-multiple chains work? Find the chain which contains the smallest possible numbers. How about the largest possible numbers?
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