Across
- 2. an operation that undoes the effect of another operation
- 3. a mathematical phrase that can contain ordinary numbers, variables, and operations
- 5. a usually formal statement of the equality or equivalence of expressions
- 8. real numbers that are greater than zero
- 10. quantity that can change within a problem, represented by a letter
Down
- 1. natural numbers and their opposites and zero
- 4. the relationship between two expressions that are not equal
- 6. the additive inverse of a real number
- 7. less than zero and opposite in sign to positives
- 9. a single number or variable, or numbers and variables multiplied together