Math Puzzle

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Across
  1. 2. the fourth basic mathematical operation of arithmetic
  2. 5. 25 plus 25 equals
  3. 6. Christmas Day
  4. 7. what is the current century
  5. 9. the third basic mathematical operation of arithmetic
  6. 11. a machine that does mathematical operations
  7. 13. the first basic mathematical operation of arithmetic
  8. 14. the second basic mathematical operation of arithmetic
  9. 16. I am 10 years old, which is a....
Down
  1. 1. a thousand years is called a ...
  2. 3. the age required to get a driver's license is
  3. 4. eight plus (five times two)equals
  4. 6. how many students in Ms Debby/Ms Lucy's class?
  5. 7. year of attack on the Twin Towers
  6. 8. how many grades are there at ECMCS?
  7. 10. a decade times 10 is a ....
  8. 12. (sixteen times two)plus three equals
  9. 15. (eight subtract four plus two) times two is .....