Scientific Notation

The population of Kansas is 2,853,118 people. Which of the following is an estimation in scientific notation for the population?

• 2,800,000 people

• 3,000,000 people

The slowest land mammal is the three-toed sloth, which moves 0.07 mile per hour. Which expression represents this number?

• 9,500,000 mi

• 95,000,000 mi

• 950,000,000 mi

• 9,500,000,000 mi

Which type of molecule in the table has a greater mass? How many times greater is it than the other type?