To find how much the world’s population increased from 1500 CE to 2020, we can subtract the population of 1500 from the population of 2020.
Population in 1500 CE: \(4.5 \times 10^8\)
Population in 2020: \(7.8 \times 10^9\)
Now, we'll perform the subtraction:
\[ 7.8 \times 10^9 - 4.5 \times 10^8 \]
To perform this calculation, we need to express \(4.5 \times 10^8\) in terms of \(10^9\):
\[ 4.5 \times 10^8 = 0.45 \times 10^9 \]
Now we can subtract:
\[ 7.8 \times 10^9 - 0.45 \times 10^9 = (7.8 - 0.45) \times 10^9 = 7.35 \times 10^9 \]
Thus, the increase in the world’s population from 1500 CE to 2020 is:
7.35×10^9 (or 7.35 times 10 superscript 9 baseline).