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#### 8th Standard New Syllabus Chapter One Creative Question

8th Standard 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

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

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

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