Integers crossword

Edit Answers
12345678910
Across
  1. 5. integers are closed under
  2. 7. integers are _ nos
  3. 9. my Everest is 8488 _ sea level
  4. 10. nos above zero
Down
  1. 1. synonym for opposite
  2. 2. synonym for subtraction
  3. 3. name the sign (-)
  4. 4. non negative integer
  5. 6. nos below zero
  6. 8. owing money is called _