20,000,000,000 in Scientific Notation = 2 x 1010
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You turn each scientific notation into decimal numbers and then divide. For example, 8 times 10 to the 12 power : 2 times 10 to the 10 power. 8000000000000 : 20000000000 = 400. (I did this using long division). OMG! I just realized that you could remove all the zeros from 80000000000000 that 20000000000 has, so being 800 : 2 which gives you the answer 400. Two ways. But I still wonder, are there any other ways?
It is 8.9*10^-5 in scientific notation
It is "(scientific notation)".
This number in scientific notation is 9.8x10-5.
It is: 2.7*10^0 in scientific notation