Whole number & Natural number

1234567891011
Across
  1. 2. which property shows a + b = b + a
  2. 4. The sum of two whole numbers is always a whole number.
  3. 7. The amount that remains after one quantity is subtracted from another.
  4. 8. which property shows (a + b) + c = a + (b + c).
  5. 10. A whole number equal to the sum of its factors.
  6. 11. A number whose factors have a sum greater than the number.
Down
  1. 1. Numbers that are easy to work with mentally.
  2. 3. Identity: If any whole number is multiplied by 1, the product remains the number itself.
  3. 4. A number that has more than two factors.
  4. 5. To find a number close to an exact amount.
  5. 6. Any number being added.
  6. 9. Element: If zero is added to any whole number, the sum remains the number itself.