Across
- 2. collection of two or more equations
- 5. set of numbers denoted with letter Q
- 7. a collection of well-defined objects
- 9. unordered subset chosen from a set of elements
- 10. operation done with like terms
- 11. set of whole numbers together with their opposites {..., -2, -1, 0, 1, 2, ...}
- 12. unknown
Down
- 1. an ordered arrangement of some or all of the elements of a given set
- 3. combination of numbers, variables, operations and groupping signs
- 4. statement which contains an equality (=) symbol between two expressions
- 6. multiplication principle is the fundamental principle of .....
- 8. the product of all positive integers less than or equal to n