Important Facts about the states of USA-- kids free worksheet PDF. This page contains the worksheets which talk about the general aspects of the states of USA. These important facts about states in the United States of America consist of several questions and answers on several aspects about the history of the 50 states in united states. In this free worksheet PDF, Kids will learn about US. States by responding to questions such as, how many states are non-contiguous states, what is the capital of the United States, What’s the meaning of D.C, The most populated state in the United States is California, The least populated state in the US is Wyoming, and much more.