Addition & Subtraction Mix

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Across
  1. 5. 8219092-7123123
  2. 6. 69420-1337
  3. 7. 985+581+3246
  4. 9. 22199-1932
Down
  1. 1. 91029321937-711312109
  2. 2. 957+936+84629
  3. 3. 587689+1987
  4. 4. 981+981
  5. 5. 81232-81098
  6. 8. 9123+7955