Page 20 - My FlipBook

Estimation helps alert you to real-life errors. When the shopkeeper totals
your bill, you can tell instantly if it is wrong because you have estimated

approximately how much it should be.

Estimation helps you calculate distances. If you know that you cover 30

cm with each step, and that you take 1800 steps to walk from home to the
library, you can estimate the distance between the two (1800 x 30 cm =

54000 cms = 540 m, which is about half a kilometre).

Estimation is fun. How many peas inside half a kilo of unshelled pods? How

many elephants should you stand on top of each other to make the height
of your flagpole? You can find out answers to all kinds of wacky questions

using estimation!

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