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

8th Standard EM

Reg.No. :
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Maths

Use Blue Ink Pen Only

Time : 02:00:00 Hrs
Total Marks : 50

Part-B

Multiple Choice Question

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

(a)

$\frac { 34 }{ 99 }$

(b)

$\frac { -142 }{ 99 }$

(c)

$\frac { 142 }{ 99 }$

(d)

$\frac { -34 }{ 99 }$

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

(a)

$\frac { -17 }{ 24 }$

(b)

$\frac { -13 }{ 16 }$

(c)

$\frac { 7 }{ -8 }$

(d)

$\frac { -31 }{ 32 }$

3. $\frac { -5 }{ 4 }$ 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

4. Which of the following illustrates the inverse property for addition?

(a)

$\frac { 1 }{ 8 } -\frac { 1 }{ 8 } =0$

(b)

$\frac { 1 }{ 8 } +\frac { 1 }{ 8 } =\frac { 1 }{ 4 }$

(c)

$\frac { 1 }{ 8 } +0=\frac { 1 }{ 8 }$

(d)

$\frac { 1 }{ 8 } -0=\frac { 1 }{ 8 }$

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

(a)

0

(b)

-1

(c)

0

(d)

$\frac { 1 }{ 2 }$

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-C

10 x 2 = 20
8. List five rational numbers between
0.25 and 0.35

9. List five rational numbers between
–1.2 and -2.3

10. Write four rational numbers equivalent to
$\frac { -3 }{ 5 }$

11. Write four rational numbers equivalent to
$\frac { -7 }{ 6 }$

12. Find the rational numbers for the points marked on the number line.

13. Find the rational numbers for the points marked on the number line.

14. Using average, write 3 rational numbers between $\frac { 14 }{ 5 }$ and $\frac { 16 }{ 3 }$

15. Verify that -(- x) is the same x for:
$x=\frac { -31 }{ 45 }$

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

17. 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?

18. Part-D

7 x 3 = 21
19. Reduce to the standard form
$\frac { 48 }{ -84 }$

20. Reduce to the standard form
$\frac { -18 }{ -42 }$

21. Find which rational number is greater?
$\frac { 5 }{ -4 } ,\frac { -11 }{ -7 }$

22. Find which rational number is greater?
$\frac { -10 }{ 3 } ,\frac { 14 }{ -5 }$

23. A student instead of multiplying a number by $\frac { 8 }{ 9 } ,$ divided it by $\frac { 8 }{ 9 }$ by mistake. If the difference between the answers got by him is 34, find the number.

24. Evaluate: $\left( \frac { 4 }{ 3 } -\left( \frac { -3 }{ 2 } \right) \right) +\left( \frac { -5 }{ 3 } \div \frac { 30 }{ 12 } \right) +\left( \frac { -12 }{ 9 } \times \frac { -27 }{ 16 } \right)$

25. In the NEET exam, out of a total of 180 questions, a Jeyanth answered $\frac { 19 }{ 30 }$ of the questions correctly and $\frac { 5 }{ 18 }$ of the questions incorrectly. How many questions did Jeyanth not attend at all?