6.517209520 X 109
It is used for recording very large or very small numbers. This is particularly true for sciences.
Scientific notation is useful for very large or very small numbers. If you use such numbers in your "real world", then scientific notation will be very useful. This may be the case, for example, when you work in science or engineering. Otherwise, if you don't work in an area that uses such large or small numbers, you probably won't find much use for them.
It helps simplifies large numbers. If your occupation requires you to deal with million, billions, trillions, or larger, then scientific notation saves a lot of time and confusion.
No, they are not.
6.517209520 X 109
Using the figure 7.2 billion for the world's population (as of 3/16/14): Scientific notation: 7.2 × 109 Standard notation: 7,200,000,000
It is used for recording very large or very small numbers. This is particularly true for sciences.
Scientific notation is useful for very large or very small numbers. If you use such numbers in your "real world", then scientific notation will be very useful. This may be the case, for example, when you work in science or engineering. Otherwise, if you don't work in an area that uses such large or small numbers, you probably won't find much use for them.
It helps simplifies large numbers. If your occupation requires you to deal with million, billions, trillions, or larger, then scientific notation saves a lot of time and confusion.
Arabic
No, they are not.
The world population of people is 7,277,477,169 8:00am today population: 7,277,706,325 10:00am today population: 7,277,504,289 12:00pm today population: 7,277,204,430 2:00pm today population: 7,277,328,302 4:00pm: 7,277,302,242 6:00pm: 7,277,403,430 7:00pm: 7,277,482,330 8-9:00pm: 7,277,293,302 12:00am tomorrow population: 7,277,209,360
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antarctica
The best contribution that the Romans made to maths today was with their Roman numeral system which is still used throughout the world even today. Their numeracy system is unique amongst numeracy systems in that it can be written down in additive notation or subtractive notation.
The world population is 7.9 billion as of March 2022.