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There are to be 6 homes built on a new development site. They could be semi-detached, detached or terraced houses. How many different combinations of these can you find?

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Start with four numbers at the corners of a square and put the total of two corners in the middle of that side. Keep going... Can you estimate what the size of the last four numbers will be?

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Fair Exchange

Age 5 to 7 Challenge Level:
You could use some numbered counters or coins to help.
What is the total you've got to make?
How many more do you need?
Can you do it in a different way?
What is the largest coin you could use?
Could you make that amount with just twos?