Rational numbers MCQ Questions and Answers Quiz

21. Which of the following is not true?

  1. rational number are closed under addition
  2. rational number are closed under subtraction
  3. rational number are closed under multiplication
  4. rational number are closed under division

22. Which of the following is the Multiplicative identity for rational numbers?

  1. 1
  2. -1
  3. zero

23. Which of the following rational numbers is in standard form?

  1. 20/30
  2. 10/4
  3. 1/2
  4. 1/-3

24. Zero (0) is

  1. the identity for addition of the rational number
  2. the identity for subtraction of the rational number
  3. the identity for multiplication of the rational number
  4. the identity for division of the rational number
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MCQ Multiple Choice Questions and Answers on Rational numbers

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Rational numbers Question and Answer

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