Åk 6–9
 
English/فارسی
6.2 Powers of Ten
When you write large numbers and very small numbers there are often a lot of digits of which to keep track.  A practical way of writing numbers with many zeros is to you powers of tens, in other words those power which have ten as a base.

For example a million can be written:

1,000,000 = 106 because 1,000,000 = 10 ∙ 10 ∙ 10 ∙ 10 ∙ 10 ∙ 10


Here are a few examples:


Foto: Sofia Distansundervisning

The distance between the equator and the north pole is about 10,000 km = 104 km.