# Chapter 5 - Section 5.1 - Exponents and Scientific Notation - Exercise Set: 127

$300,000,000$

#### Work Step by Step

We are given that the estimated world population in 1 C.E. was $3.0\times10^{8}$. Since the exponent is positive, move the decimal 8 places to the right. Note that 8 places to the right will be 8 decimal places past the last digit (3), so we will add 8 zeroes after 3. $3.0\times10^{8}=300,000,000$

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