Math

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Across
  1. 3. what were talking about.
  2. 5. you do the opposite of deivision.
  3. 6. of 9 are 9,18,27,36,45.
  4. 8. is the opposite of multiplycation.
  5. 9. numbers it has only 2 factors.
  6. 10. is lengh times whit.
Down
  1. 1. behind the number hint a dot.
  2. 2. is side+side+side+side=?.
  3. 4. numbers have 3 or more factors.
  4. 7. is LxWx? or is lenght time with time ?