Math crossword

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Across
  1. 3. 4.5X2
  2. 4. a degree that is bigger than 0 degree but smaller than the right angle.
  3. 5. the value that when multiplied by itswlf produces the original number
  4. 7. a number that has more than two factors
  5. 9. 20+9-18
  6. 10. it is a single number
Down
  1. 1. how many times a number is multiplied by itself
  2. 2. when a number is multiplied by its self
  3. 6. the answer in a devision
  4. 8. the degree that is 90 degrees