Addition

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Across
  1. 4. nine + four
  2. 5. eight + eight
  3. 7. twenty + forty
  4. 8. forty + twenty
  5. 9. six + six
Down
  1. 1. six + five
  2. 2. fifteen + four
  3. 3. thirty + twenty
  4. 4. sixteen + fourteen
  5. 6. nine + six