Adding and Subtracting Rational Numbers Worksheet

Adding and Subtracting Rational Numbers Worksheet
  • 1. If we have a rational number say 3/5, what another rational number can be added to it, so that the result we get is the same rational number 3/5?
    1. 1
    2. 0
    3. 3/5 itself
    4. None of these
  • 2. If we have a rational number say 2/7, what another rational number can be subtracted from it, so that the result we get is the same rational number 2/7?
    1. 1
    2. 0
    3. 2/7 itself
    4. None of these
  • 3. If we have a rational number say 4/7, what another rational number can be added to it, so that the result we get is the additive identity (0)  ?
    1. 1
    2. 0
    3. 4/7 itself
    4. - 4/7
  • 4. If we have two rational numbers say 3/5 and 6/7, then which of the following property shows that 3/5 + 6/7 = 6/7 + 3/5?
    1. Associative property
    2. Commutative property
    3. Additive identity
    4. None of these
  • 5. If we have three rational numbers say 7/8, 3/5 and 6/7, then which of the following property shows that (7/8 + 3/5) + 6/7 = 7/8 + (3/5 + 6/7)?
    1. Associative property
    2. Commutative property
    3. Additive identity
    4. None of these
  • 6. If we have a rational numbers say 5/7, then if we write 5/7 + 0 = 5/7, then which of the following property is satisfied by the above given equation?
    1. Associative property
    2. Commutative property
    3. Additive identity
    4. None of these
  • 7. If we have a rational numbers say 5 / 9, then if we write 5 / 9 + (-5 / 9) = 0, then which of the following property is satisfied by the above given equation?
    1. Associative property
    2. Commutative property
    3. Additive identity
    4. None of these
  • 8. If we have a rational number say p1 / q1, then which number of the following rational numbers is called its additive inverse?
    1. –p1 / q1
    2. q1 / p1
    3. 1
    4. 0
  • 9. Which of the following equations shows the commutative property of addition of the rational numbers?
    1. p1 / q1 + p2 / q2 = p2 / q2 + p1 / q1
    2. p1 / q1 + (-p1 / q1) = 0
    3. (p1 / q1 + p2 / q2) + p3 / q3 = p1 / q1 + (p2 / q2 + p3 / q3)
    4. None of these
  • 10. Which of the following equations shows the associative property of addition of the rational numbers?
    1. p1/q1 + p2/q2 = p2/q2 + p1/q1
    2. p1/q1 + (-p1/q1) = 0
    3. (p1/q1 + p2/q2) + p3/q3 = p1/q1 + (p2/q2 + p3/q3)
    4. None of these
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