405,000 in Scientific Notation = 4.05 x 105
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It is 4.05*108
405 can be written as 4.05 × 102 in scientific notation.
Scientific notation of 12 000
It is: 5.0*10^8 in scientific notation
In scientific notation, 0.000 000 000 154 is 1.54 x 10-10.