Move the decimal between the 3 and 8, and you get: 3.8*10^-1
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38 quadrillion kilometers in scientific notation = 3.8 × 1016 km
the answer to how to write 87200 in scientific notation is 8.72*10^4
You write 0.00007463 in scientific notation as: 7.463 × 10-5
There are probably about half a dozen ways to write this number in scientific notation, but one way to write it, in scientific notation, is 2.4936061x108.
3000 in scientific notation is 3x103.