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