The average mass of a giraffe is approximately 1 × 10^3 kilograms. the average mass of a blue whale is approximately 2 × 10^6 kilograms. about how many times more mass does a blue whale have than a giraffe?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?