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Bat Wings

Two students collected some data on the wingspan of bats, but each lost a measurement. Can you find the missing information?

Kate's Date

When Kate ate a giant date, the average weight of the dates decreased. What was the weight of the date that Kate ate?

Balancing the Books

How many visitors does a tourist attraction need next week in order to break even?

Half a Minute

Age 11 to 14
Challenge Level
You could perhaps work out some different types of average for the three sets of data, and then think about which is most appropriate to use.