Numbers!

12345678
Across
  1. 4. 2+3+7
  2. 6. 3+4
  3. 8. 2+3+10
Down
  1. 1. 9+5+5+
  2. 2. 10 + 3
  3. 3. 4+9+1
  4. 5. 5+5+1
  5. 7. 2+4+2