When you do not need to speak or write about exact quantities or measures, learning to round numbers to 10, 100 or 1,000 can be useful. It can make calculations easier and it also helps when you are ...

There are many situations where it is not necessary to give an exact number. For example, if there are \(54785\) people living in a town, you could say that the population is approximately \(55000\). ...

Humans are remarkably good at estimating magnitudes. For example, we can estimate the amount of time it will take us to drive from point A to point B, so we know what time we should leave. We estimate ...