Question 548968
scientific notation 

it is way of writing very large numbers

example 
{{{16000 = 1.6 *10000= 1.6 *10^4}}}

Light travels at 300000 meters /s

that is written as 3*10^5 m/s

Distance between earth & Moon

assume 384000 km

3.84 * 10^5 km

The decimal point is put after one digit

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