Total 9 Questions (Please login to see all questions)

1. Cao Chong was born in 196 AD. He died in 208 AD. About how old was Chong when he died?
2. There are 21.5 million people in Beijing. New York City has 8.5 million people. How many more people live in Beijing than in New York City?
3. The United States is the 3rd largest country in the world by area. If the United States has 9,862,675 sq km, how much larger is the US than China?