Addition with regrouping

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Across
  1. 2. 348 + 168
  2. 4. 561 + 69
  3. 5. 154 + 379
  4. 6. 76 + 149
  5. 8. 805 + 96
Down
  1. 1. 290 + 93
  2. 2. 75 + 459
  3. 3. 631 + 89
  4. 4. 234 + 397
  5. 7. 499 + 99