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8th Maths Rational Numbers One Mark Question Paper Aug-23 , 2019

Rational Numbers

8th Maths Rational Numbers One Mark Question Paper

Rational Numbers One Mark Questions

8th Standard

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 20
    5 x 1 = 5

  1. Which of the following rational numbers is the greatest?

    (a)

    \(\frac { -17 }{ 24 } \)

    (b)

    \(\frac { -13 }{ 16 } \)

    (c)

    \(\frac { 7 }{ -8 } \)

    (d)

    \(\frac { -31 }{ 32 } \)

  2. Which of the following pairs is equivalent?

    (a)

    \(\frac { -20 }{ 12 } ,\frac { 5 }{ 3 } \)

    (b)

    \(\frac { 16 }{ -30 } ,\frac { -8 }{ 15 } \)

    (c)

    \(\frac { -18 }{ 36 } ,\frac { -20 }{ 44 } \)

    (d)

    \(\frac { 7 }{ -5 } ,\frac { -5 }{ 7 } \)

  3. \(\frac { 3 }{ 4 } \div \left( \frac { 5 }{ 8 } +\frac { 1 }{ 2 } \right) \) = 

    (a)

    \(\frac { 13 }{ 10 } \)

    (b)

    \(\frac { 2 }{ 3 } \)

    (c)

    \(\frac { 3 }{ 2 } \)

    (d)

    \(\frac { 5 }{ 8 } \)

  4. Closure property is not true for division of rational numbers because of the number

    (a)

    0

    (b)

    -1

    (c)

    0

    (d)

    \(\frac { 1 }{ 2 } \)

  5. \(\left( 1-\frac { 1 }{ 2 } \right) \times \left( \frac { 1 }{ 2 } -\frac { 1 }{ 4 } \right) \div \left( \frac { 3 }{ 4 } -\frac { 1 }{ 2 } \right) \)=

    (a)

    \(\frac { 1 }{ 2 } \)

    (b)

    \(\frac { 3 }{ 4 } \)

    (c)

    \(\frac { 1 }{ 4 } \)

    (d)

    \(\frac { -1 }{ 2 } \)

    6. 5 x 1 = 5

  6. \(\frac { -19 }{ 5 } \) lies between the integers ______________ and ________________

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    -4 and -3

  7. The rational number that is represented by 0.44 is __________.

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    \(\frac { 11 }{ 25 } \)

  8. The standard form of \(\frac { +58 }{ -78 } \) is ______________

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    \(\frac { -29 }{ 39 } \)

  9. The value of \(\frac { -5 }{ 12 } +\frac { 7 }{ 15 } \) = ________________

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    \(\frac { 1 }{ 20 } \)

  10. The value of \(\left( \frac { -15 }{ 23 } \right) \div \left( \frac { +30 }{ -46 } \right) \) is _____________

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    1

    11. 5 x 1 = 5

  11. The rational numbers that are equal to their additive inverses are 0 and –1.

    (a) True
    (b) False

  12. \(\frac { -7 }{ 8 } \times \frac { -23 }{ 27 } =\frac { -23 }{ 27 } \times \frac { -7 }{ 8 } \) illustrates the closure property of rational numbers

    (a) True
    (b) False

  13. Associative property is not true for subtraction of rational numbers.

    (a) True
    (b) False

  14. The additive inverse of \(\frac { -11 }{ -17 } \) is \(\frac { 11 }{ 17 } \)

    (a) True
    (b) False

  15. The product of two negative rational numbers is a positive rational number.

    (a) True
    (b) False
    16. 5 x 1 = 5

  16. \(\left( \frac { 5 }{ 6 } +-1 \right) +\frac { -3 }{ 4 } =\frac { 5 }{ 6 } +\left( -1+\frac { -3 }{ 4 } \right) \)

    17. (1)

    does not exist

  17. \(\frac { -1 }{ 3 } \left( \frac { 1 }{ 4 } +\frac { 2 }{ 3 } \right) =\left( \frac { -1 }{ 3 } \times \frac { 1 }{ 4 } \right) +\left( \frac { -1 }{ 3 } \times \frac { 2 }{ 3 } \right) \)

    18. (2)

    distributive property of multiplication over addition

  18. \(\frac { -4 }{ 9 } \times \frac { 9 }{ -4 } =\frac { 9 }{ -4 } \times \frac { -4 }{ 9 } =1\)

    19. (3)

    associative property of addition

  19. \(\frac { 1 }{ 0 } \)

    20. (4)

    a rational number

  20. \(\frac { 22 }{ 7 } \)

    21. (5)

    multiplicative inverse property

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