Rational numbers

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Across
  1. 2. Rational numbers can be represented on a _______ line.
  2. 3. For any rational number a, a ÷ 0 = _______
  3. 4. All positive integers excluding zero are known as ________ numbers
  4. 5. The multiplication of rational numbers is closure, commutative and ______________.
  5. 6. 2/3 and -5/4 are ___________ numbers
  6. 9. The _______ of two integers may not lead in the formation of another integer.
Down
  1. 1. Addition, multiplication and _______ of two rational numbers lead to the formation of another rational number.
  2. 7. The _________ inverse of a/b is –a/b.
  3. 8. Reciprocal is also known as the multiplicative _______________.