Term 1 Rational Numbers 3 Marks and 5 Marks Questions

8th Standard EM

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 40
    5 x 3 = 15
  1. Write the following decimal numbers as rationals.
    0.25

  2. Write the following decimal numbers as rationals.
    0.666…

  3. Find which rational number is greater?
    \(\frac { 5 }{ -4 } ,\frac { -11 }{ -7 } \)

  4. Find which rational number is greater?
    \(\frac { -10 }{ 3 } ,\frac { 14 }{ -5 } \)

  5. Simplify \(\left( \frac { -16 }{ 5 } \times \frac { 20 }{ 8 } \right) -\left( \frac { 15 }{ 5 } \times \frac { -35 }{ 3 } \right) \)

  6. 5 x 5 = 25
  7. Simplify \(\left( \frac { -16 }{ 5 } \times \frac { 20 }{ 8 } \right) -\left( \frac { 15 }{ 5 } \times \frac { -35 }{ 3 } \right) \div \left( \frac { 11 }{ 16 } +\frac { 4 }{ 8 } \right) \)

  8. Simplify \(=\frac { -12 }{ 10 } +\left( \frac { -90 }{ 15 } \right) -\left( \frac { 3 }{ 8 } \right) \)

  9. Simplify \(\left( \frac { -7 }{ 18 } \times \frac { 15 }{ -7 } \right) -\left( 1\times \frac { 1 }{ 4 } \right) +\left( \frac { 1 }{ 2 } \times \frac { 1 }{ 4 } \right) \)

  10. Evaluate \(\frac { 6 }{ 7 } -2+\frac { -7 }{ 9 } +\frac { 19 }{ 21 } \)

  11. Verify associative property for addition of rational numbers for \(a=\frac{5}{6}, b=\frac{-3}{4},c=\frac{4}{7}\)

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