Choose appropriate methods of calculating (1)

When answering these problems say which operation is needed and whether it can be done mentally, on paper or with a calculator.

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Questions which need an understanding of a.m., p.m., 24 hour clock, leap years as well as using graphs.

An atlas with time zones is needed for the first activity and there are line graphs on time to interpret.

More on choosing the most appropriate method of calculating.

Tricky calculations working out the best and worst meal deals.

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