Rounding very large numbers to the nearest ten thousand and rounding populations to the nearest million.
Reading and writing very large numbers: harder than it seems!
Estimating on a 0 to 10000 number line and making approximate answers to calculations.
Mini investigations involving amounts of time, large numbers and, not forgetting, blades of grass!
Co-ordinates with negative numbers, including temperature and tide levels.
Co-ordinates in four quadrants are an excellent way to demonstrate knowledge of negative numbers.
Estimating and then measuring to the nearest millimetre requires a great deal of accuracy.
Word problems and shape patterns involving ratio and proportion.