cent deca deci words

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Across
  1. 5. a unit used to measure the intensity of a sound
  2. 6. a person who is 100 years old or more
  3. 7. one tenth of a meter
  4. 8. this has one more face than a nonahedron
  5. 11. a cm also known as _________ is equal to 0.393701 inch
Down
  1. 1. an insect with 100 legs
  2. 2. the 1960s, 1970s, 1980s, 1990s are all examples of
  3. 3. perfect score on a test - 100 _______
  4. 4. "." symbol in mathematics
  5. 6. period of 100 years
  6. 9. 1976 was this anniversary of the united states bi__________
  7. 10. athletic competition with ten events