Numbers, Numbers, Numbers

12345678
Across
  1. 4. 59 + 3=
  2. 6. 50-2=
  3. 7. 230-153=
Down
  1. 1. 7 + 7=
  2. 2. 100-44=
  3. 3. 256-237=
  4. 5. 320-317=
  5. 8. 32-7=