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#### Term 1 Model One Marks Questions

8th Standard EM

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Maths

Time : 01:00:00 Hrs
Total Marks : 25
10 x 1 = 10
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. 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. 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. $\frac { 1 }{ 2 } -\left( \frac { 3 }{ 4 } -\frac { 5 }{ 6 } \right) \neq \left( \frac { 1 }{ 2 } -\frac { 3 }{ 4 } \right) -\frac { 5 }{ 6 }$ illustrates that subtraction does not satisfy the ________ property for rational numbers.

(a)

commutative

(b)

closure

(c)

distributive

(d)

associative

6. The product of 7p3 and (2p2)2 is

(a)

14p12

(b)

28B7

(c)

9p7

(d)

11p12

7. If the area of a rectangle is 48m2n3 and whose length is 82mn then, its breadth is______

(a)

6mm

(b)

8m2n

(c)

7m2n2

(d)

6m2n2

8. If in triangles PQR and XYZ, $\frac{PQ}{XY}=\frac{QR}{ZX}$ then they will be similar if

(a)

∠Q=∠Y

(b)

∠P=∠X

(c)

∠Q=∠X

(d)

∠P≡∠Z

9. If ΔABC～ΔPQR in which ∠A = 53o and ∠Q = 77o, then R is

(a)

50°

(b)

50°

(c)

70°

(d)

80°

10. In how many ways can you answer 3 multiple choice questions, with the choices A, B, C and D?

(a)

4

(b)

3

(c)

12

(d)

64

11. 5 x 1 = 5
12. $\frac { -19 }{ 5 }$ lies between the integers ______________ and ________________

()

-4 and -3

13. The value of $\left( \frac { -15 }{ 23 } \right) \div \left( \frac { +30 }{ -46 } \right)$ is _____________

()

1

14. If $x\times \frac { -55 }{ 63 } =\frac { -55 }{ 63 } \times x=1$ then x is called the _______________ of $\frac { 55 }{ 63 }$

()

Multiplicative Inverse

15. The three dimensions of a cuboid are _______.

()

length, breadth and height

16. The cross section of a solid cylinder is _______.

()

Circle

17. 5 x 1 = 5
18. 0 is the smallest rational number

(a) True
(b) False
19. The rational number that does not have a reciprocal is 0.

(a) True
(b) False
20. The rational numbers that are equal to their additive inverses are 0 and –1.

(a) True
(b) False
21. The additive inverse of $\frac { -11 }{ -17 }$ is $\frac { 11 }{ 17 }$

(a) True
(b) False
22. 8x3y÷4x2=2xy

(a) True
(b) False
23. 5 x 1 = 5
24. $\left( \frac { 5 }{ 6 } +-1 \right) +\frac { -3 }{ 4 } =\frac { 5 }{ 6 } +\left( -1+\frac { -3 }{ 4 } \right)$

25. (1)

does not exist

26. $\frac { 1 }{ 0 }$

27. (2)

associative property of addition

28. Area of a circle

29. (3)

πr2

30. Area of the sector of a circle

31. (4)

$=\frac { { \theta }^{ 0 } }{ { 360 }^{ 0 } } \times { \pi r }^{ 2 }$

32. (5)

Cylinder