Add N Sub 3

1234567
Across
  1. 5. The answer obtained in addition.
  2. 6. The answer obtained in subtraction.
  3. 7. The operation used to compare two numbers.
Down
  1. 1. Equivalent of 100 hundred
  2. 2. The numbers that are added.
  3. 3. This does no changes when the order of numbers is changed.
  4. 4. The difference obtained when a number is subtracted from itself.