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Maths VIII, C (S-II)

Ms Jaya S, PGT (Maths)

Date of submission: 23 June

RATIONAL NUMBERS , LINEAR EQUATIONS IN ONE VARIABLE

1.     Which rational number is called identity element for addition  of  rational  numbers ?

(a)  1      (b)   -1     (c)  0     (d)   none of these

2.      3x – 3  =   2x  +  2  ,   the   value of x is

 

(a)     2      (b)     5     (c)    0    (d)    1

      3. Write the present age of a mother , if she is 2 years less than  three                  times her son’s age ,if her son’s age is x years.

             (a)    2 – 3x     (b)     3x+2     (c)   3x-2   (d)  2x – 3

    4 .Which  rational number is multiplicative identity for rational numbers ?

       (a)       1      (b)   -1     (c)  0     (d)   none of these

5.     If    2x -2 =  x +3  , then   x  is

        (a)       1      (b)   -5     (c)  0     (d)   5

 

  6.  Additive  inverse  of   clip_image002[5]  is

       (A) clip_image004[4]        (B)  clip_image006[4]        (C)   clip_image008[4]       (D)   none of these

      7 .   clip_image010[4] clip_image012[4] clip_image014[4]  clip_image016[4] clip_image018[4]

   (A)clip_image020[4]       (B)  clip_image022[4]    (C)   clip_image024[4]     (D) )   none of these

    8 .Represent      clip_image026[4]     on the number  line

    9.Divide  :     clip_image028[4]     by the reciprocal  of  clip_image030[4]  ?

 

 

10 .Write three rational   numbers  between    clip_image032[4]      and     clip_image034[4]  ?

11 . Using  distributive  property ,  solve :     clip_image036[6]  clip_image038[4]    +    clip_image036[7] clip_image040[4] clip_image042[4]  .

 

12. Using properties  find the  value :   clip_image044[4] clip_image046[4]    clip_image048[4] ×clip_image050[4]  +  clip_image052[4]

13 .Solve : clip_image054[4] clip_image056[4] – x

14. Solve :  3(5x-7)  -2 (9x-11) =  4( 8x-13) -17.

15 . Solve  :  clip_image058[4]   clip_image060[4] clip_image062[4]   =  clip_image064[4]  .

 16 .Solve   :   clip_image066[4]  +3  

17 .  Solve  15(x-4) -2 (x-9) +5(x+6) = 0

18.  Solve   :    x + clip_image068[4]     =  35

19.  If  you subtract  clip_image070[4]  from a number  and multiply the result by 8 . The result now obtained   is 3 times the number . What is the number ?

20.The sum of three consecutive natural numbers is  135, find the numbers?

 


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