Question

Approximately how much larger is the population of Pennsylvania than the population of Ohio? Pennsylvania's population is 12,604,767, and Ohio's population is 11,542,645.

Answer 1

1,062,122 because you subtract OH from PA's population. 

Answer 2

Answer= 1 million

For an approximation we don't use exact numbers. Seeing as Pennsylvania has a population of around 12.6 million and Ohio has a population near 11.5 million, there is about a difference of 1 million when comparing the populations.