Is 100 dollars a lot in Vietnam?

Could you please elaborate on why you are asking if 100 dollars is considered a significant amount in Vietnam? The value of currency can vary greatly depending on the country's economic situation, purchasing power parity, and cost of living. In Vietnam, the local currency is the Vietnamese dong, and the exchange rate may have fluctuated over time. It would be helpful to understand the context of your question, such as whether you are planning a trip to Vietnam and want to know how much spending money to bring or if you are simply curious about the economic state of the country. Without more information, it's difficult to give a definitive answer to your question.