Across
- 6. The product of two integers with like signs is?
- 7. they have exactly the same elements.
- 8. the product of two integers with unlike signs is?
- 9. Any number added to zero is equal to the number.
- 10. a set whose elements are all members of another set.
- 13. used to illustrate sets pictorially.
Down
- 1. the order of the factors does not affect the product.
- 2. The sum of opposites is always equal to zero.
- 3. The product of integers with even number of negative factors is
- 4. they have same cardinality
- 5. the grouping of the addends does not affect the sum
- 11. the product of integers with odd number of negative factors is
- 12. set of all elements under consideration.