Rounding and estimating task. Powerpoint lesson.

Starts with rounding practise (assumes students have already covered this) then moves on to a modelled example of estimating. Students then form groups of 2 or 3 and seelct a sheet with an estimating task, challenge levels vary between 1 and 3. Has local interest topics included so unless you know Northampton (where?) suggest you remove these 2 examples.