Why do we use money?

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Across
  1. 1. paper money
  2. 3. money used in a particular country
  3. 7. take something from someone for a short period of time
  4. 9. give someone something and get another thing in return
  5. 11. to give someone money for their services or goods
Down
  1. 1. exchange goods or services for other goods or services without using money
  2. 2. to give someone something for a short period of time
  3. 4. round metal money
  4. 5. to have an obligation to pay
  5. 6. pay out money for things or services
  6. 8. a place that deals with money
  7. 10. to make something similar or identical to another thing