don steward
mathematics teaching 10 ~ 16

Wednesday, 22 December 2010

weighty averages

for some reason, you have many weights but they are all either 3kg or 8kg

how can you get a mean of
(i) 4kg?
(ii) 6kg?
(iii) 4.5kg?
(iv) 6.9kg?

you can also explore other pairs of weights and different means to create with these

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