Addition + Subtraction

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Across
  1. 3. a number greater than zero
  2. 4. a whole number that can be positive, negative, or zero
  3. 6. what happens when you subtract from a number
  4. 8. what happens when you add to a number
  5. 9. a neutral number that is neither positive nor negative
Down
  1. 1. a number that is the same distance from zero but on the other side
  2. 2. the result of subtracting one number from another
  3. 5. a number less than zero
  4. 7. the result of adding two or more numbers