T1 - Rational Numbers English Medium Free Online Test 1 Mark Questions 2020-2021

8th Standard

    Reg.No. :
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Maths

Time : 00:10:00 Hrs
Total Marks : 10

    Part A

    10 x 1 = 10
  1. The number which is subtracted from \(\frac { -6 }{ 11 } \) to get \(\frac { 8 }{ 9 } \) is

    (a)

    \(\frac { 34 }{ 99 } \)

    (b)

    \(\frac { -142 }{ 99 } \)

    (c)

    \(\frac { 142 }{ 99 } \)

    (d)

    \(\frac { -34 }{ 99 } \)

  2. \(\frac { -5 }{ 4 } \) is a rational number which lies between

    (a)

    0 and \(\frac { -5 }{ 4 } \)

    (b)

    -1 and 0

    (c)

    –1 and –2

    (d)

    –4 and –5

  3. The sum of the digits of the denominator in the simplest form of \(\frac { 112 }{ 528 } \)

    (a)

    4

    (b)

    5

    (c)

    6

    (d)

    7

  4. 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)

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

  5. Multiplicative inverse of 0 (is)

    (a)

    0

    (b)

    1

    (c)

    -1

    (d)

    does not exist

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

    (a)

    0

    (b)

    -1

    (c)

    0

    (d)

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

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

    (a)

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

    (b)

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

    (c)

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

    (d)

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

  8. \(\frac{1}{2}+\frac{6}{4}\) is 

    (a)

    \(\frac{6}{6}\)

    (b)

    \(\frac{6}{4}\)

    (c)

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

    (d)

    None of these

  9. \(\frac { 1 }{ 2 } \times \left( \frac { 2 }{ 3 } +\frac { 6 }{ 4 } \right) =\left( \frac { 1 }{ 2 } +\frac { 2 }{ 3 } \right) +\left( \frac { 1 }{ 2 } \times \_ \_ \right) \)

    (a)

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

    (b)

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

    (c)

    \(\frac{4}{6}\)

    (d)

    0

  10. Multiplicative identity is _______.

    (a)

    1

    (b)

    0

    (c)

    the given number itself

    (d)

    reciprocal of the given number

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