0
Usually makes it easier to read and reduces the risk of error.
For example, consider the following:
- The average distance from the earth to the sum is 149.6 million kilometres.
- In space light travels at 300,000 km per second.
Given that Time = Distance/Speed, how long does light take to get from the sun to the earth?
You could try 149600000/300000 and hopefully not get into a tangle with the 0s.
Or you could go for
Distance = 149.6 million = 149.6*106 = 1.496*108 km
Speed = 300000 = 3*105 km s-1.
So time = 1.496*108 / 3*105 seconds = 1.496/3 * 103 = 4.99*102 seconds or 499 seconds.
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What is a type of notation expressing very large or very small numbers?
Scientific notation
How do you express 0.0763 in scientific notation?
Scientific Notation is a way of expressing a number as a value between 1 and 10 multiplied by a power of 10. So, 0.0763 = 7.63 x 10-2
How do you express the result in large numbers?
Expressing the result of a very large number or even a very small number is what we call scientific notation.
What are the rules in expressing number in scientific notation?
In general the numeric part should be between 1 and (almost but not quite) 10.
What is scientiic notation?
A method of expressing numbers in terms of a decimal number between 1 and 10 multiplied by a power of 10. The scientific notation for 10,492, for example, is 1.0492 × 104.
