Chapter 1 & 2

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Across
  1. 2. each item in a matrix
  2. 8. the opposite of a number
  3. 9. a mathematical phrase that can include numbers, variables, and operation symbols
  4. 11. a symbol, usually a letter, that represents one or more numbers
  5. 13. cannot be expressed in the form a/b, where a and b are integers
  6. 16. has two parts, a base and an exponent
  7. 18. a rectangular arrangement of numbers in rows and columns
  8. 19. two numbers that are the same distance from 0 on a number line but lie in opposite directions are opposites
  9. 20. of a number is its distance from 0 on a number line
Down
  1. 1. counting numbers excluding 0
  2. 3. of a nonzero rational number a/b is b/a
  3. 4. any example that proves a statement false
  4. 5. a mathematical sentence that compares the value of two expressions using an inequality symbol
  5. 6. an equation that contains one or more variables
  6. 7. rational numbers and irrational numbers form
  7. 10. whole numbers and their opposites
  8. 12. any number that you can write in the form a/b
  9. 14. synonym for multiplicative inverse
  10. 15. counting numbers including 0
  11. 17. a mathematical sentence that uses an equal sign