8th Standard New Syllabus Chapter One Creative Question

8th Standard 2019 EM

    Reg.No. :
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Maths

Use Blue Ink Pen Only

Time : 02:00:00 Hrs
Total Marks : 100

    Part -A

    Multi[ple Choice Question 

    6 x 1 = 6
  1. The sum of the digits of the denominator in the simplest form of \(\frac { 112 }{ 528 } \)

    (a)

    4

    (b)

    5

    (c)

    6

    (d)

    7

  2. The rational number (numbers) which has (have) additive inverse is (are)

    (a)

    7

    (b)

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

    (c)

    0

    (d)

    all of these

  3. 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)

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

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

    (a)

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

    (b)

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

    (c)

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

    (d)

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

  5. \(\frac { 1 }{ 2 } -\left( \frac { 3 }{ 4 } -\frac { 5 }{ 6 } \right) \neq \left( \frac { 1 }{ 2 } -\frac { 3 }{ 4 } \right) -\frac { 5 }{ 6 } \) illustrates that subtraction does not satisfy the ________ property for rational numbers.

    (a)

    commutative

    (b)

    closure

    (c)

    distributive

    (d)

    associative

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

    (a)

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

    (b)

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

    (c)

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

    (d)

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

  7. Part -B

    Answer The Following Questions

    7 x 2 = 14
  8. List five rational numbers between
    –2 and 0

  9. List five rational numbers between
    \(\frac { -1 }{ 2 } \) and \(\frac { 3 }{ 5 } \)

  10. List five rational numbers between
    0.25 and 0.35

  11. Draw the number line and represent the following rational numbers on it.
    \(\frac { -17 }{ -5 } \)

  12. Draw the number line and represent the following rational numbers on it.
    \(\frac { 15 }{ -4 } \)

  13. If \(\frac { 3 }{ 4 } \) of a box of apples weighs 3 kg and 225 gm, how much does a full box of apples weigh?

  14. Mangalam buys a water jug of capacity \(3\frac { 4 }{ 5 } \) litres. If she buys another jug which is \(2\frac { 2 }{ 3 } \) times as large as the smaller jug, how many liters can the larger one hold?

  15. Part -C

    Answer The Following Questions

    2 x 3 = 6
  16. The product of two rational numbers is \(\frac { -2 }{ 3 } \) If one number is \(\frac { 3 }{ 7 } \) find the other.

  17. One roll of ribbon is \(18\frac { 3 }{ 4 } \) m long. Sankari has four full rolls and one – third of a roll. How many meters of ribbon does Sankari have in total?

  18. Part -D

    Answer The Following Questions

    4 x 1 = 4
  19. If -3 x \(\frac { -6 }{ 11 } \) = \(\frac { -6 }{ 11 } \times x\) is _______________  

    ()

    -3

  20. If distributive property is true for \(\left( \frac { 3 }{ 5 } \times \frac { -4 }{ 9 } \right) +\left( x\times \frac { 15 }{ 17 } \right) =\frac { 3 }{ 5 } \times (y+z)\) then x, y, z are ________ , ________ and ________.

    ()

    \(\frac { 3 }{ 5 } \)\(\frac { -4 }{ 9 } \) and \(\frac { 15 }{ 17 } \)

  21. If \(x\times \frac { -55 }{ 63 } =\frac { -55 }{ 63 } \times x=1\) then x is called the _______________ of \(\frac { 55 }{ 63 } \)

    ()

    Multiplicative Inverse

  22. The multiplicative inverse of -1 is ________.

    ()

    -1

  23. Part -E

    Answer The Following Questions

    1 x 1 = 1
  24. The product of two negative rational numbers is a positive rational number.

    (a) True
    (b) False

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