Module 1 puzzle

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Across
  1. 2. A number or expression inside the cube root.
  2. 3. Not rational.
  3. 5. Cube root.
  4. 6. Non-zero digits.
  5. 8. Real numbers include rational numbers like positive and negative integers, fractions, and irrational numbers.
  6. 9. The closeness of the value being measured to the actual measurement of the object.
Down
  1. 1. Any expression containing a cube root.
  2. 4. The positive integers are closed under addition
  3. 5. not irratinals.
  4. 7. The small floating number that appears after a number or letter.