numbers!1..2..3

1234567
Across
  1. 1. 46+143=
  2. 3. 2874 plus 126=
  3. 5. 5 times 18=
  4. 7. 789-1578=
Down
  1. 2. 5 times 180=
  2. 3. 15 times 2=
  3. 4. eighty-seven
  4. 5. the number after 96
  5. 6. if y= 6, and n=3, and the equation is y+n=a, then a=
  6. 7. 67-89=