Addition

123456
Across
  1. 2. 75+50
  2. 3. 73+30
  3. 4. 48+48
  4. 5. 12 + 58
  5. 6. 50+40
Down
  1. 1. 400+59
  2. 2. 100 + 09
  3. 3. 750 + 759