vocabulary

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Across
  1. 3. quantity that can change within a problem
  2. 5. less than zero and opposite in sign to positives
  3. 7. natural numbers and their opposites and zero
  4. 10. a mathematical phrase that can contain ordinary numbers, variables, and operations
Down
  1. 1. real numbers that are greater than zero
  2. 2. a usually formal statement of the equality or equivalence of expressions
  3. 4. magnitude of a real number without regard to its sign, how far it is from zero
  4. 6. the opposite, a number added to its opposite has a sum of zero
  5. 8. the relationship between two expressions that are not equal
  6. 9. a single number or variable, or numbers and variables multiplied together