Numbers

123456789
Across
  1. 3. twenty-four minus twelve
  2. 4. twenty-six minus elven
  3. 6. twenty-seven minus fifteen
  4. 7. thirteen plus seven
  5. 9. thirteen plus sixteen
Down
  1. 1. twenty-five minus eight
  2. 2. twenty-nine minus seven
  3. 5. eighteen plus ten
  4. 6. sixteen plus nine
  5. 8. twenty-two plus eight