How can subtracting three-digit numbers help us understand the world around us?

seldr29

hello

esmith

jessica_mays

dannytorrestriana

eeckhart

Marco Hernandez

bbedolla1

tomasson

estudnicky

sandra.alfaro

johna.blackburn

azahn6

1002156307

mmerrill

sim.catherine

bbryan

fragah

s.sanchez2