Grade 8 · Social studies
Account for population change practice
Calculate change in an invented population from births, deaths and migration without treating all growth as one cause.
Opening your practice adventure…
Try a sample
A town has 60 births and 75 deaths in a year. What is its natural population change before migration?
- +15 people
- −135 people
- +135 people
- −15 people
See the answer & why
−15 people
Natural change is births minus deaths: 60 − 75 = −15.
A little hint: Start population + births − deaths + arrivals − departures gives the ending population in this model.
A teaching tip
Start population + births − deaths + arrivals − departures gives the ending population in this model.