Canada has a population. That is about 1/10 as large as the United States. If Canada's population is about 32 million, about how many people live in the United States? Explain the number of zeros in your the answer
if Canada's population is 1/10 of the US, that means US population is 10 times more than Canada's population. So you have to do 32 million × 10. Whenever you multiply any number by 10, you just add a 0 at the end, so the answer is 320,000,000.