Puzzle, by Addie B :)

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Across
  1. 2. to get rid of
  2. 8. Any number that can be expressed as a ratio of two integers
  3. 9. A mathematical phrase that contains operations number and/or variables
  4. 10. putting somthing in order, orginising
  5. 12. a equal number,
Down
  1. 1. a point at the end of a line segment ray
  2. 3. the opposite of a number
  3. 4. Two numbers that are an equal distance from zero on a number line.
  4. 5. to find an answer or a solution
  5. 6. a diagram showing the relation between variables.
  6. 7. The distance of a number from zero on a number line.
  7. 11. a number and its opposite.