Algebra Book Back Questions

7th Standard EM

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Maths

Time : 00:45:00 Hrs
Total Marks : 30
    4 x 1 = 4
  1. An algebraic statement which is equivalent to the verbal statement “Three times the sum of x and y” is

    (a)

    3(x + y)

    (b)

    3 + x + y

    (c)

    3x + y

    (d)

    3 + xy

  2. Choose the pair of like terms

    (a)

    7p, 7x

    (b)

    7r, 7x

    (c)

    −4x, 4

    (d)

    −4x, 7x

  3. The value of 7a − 4b when a = 3, b = 2 is

    (a)

    21

    (b)

    13

    (c)

    8

    (d)

    32

  4. The solution of 3x + 5 = x + 9 is

    (a)

    2

    (b)

    3

    (c)

    5

    (d)

    4

  5. 3 x 1 = 3
  6. The variable in the expression 16x − 7 is _________

    ()

    x

  7. The constant term of the expression 2y − 6 is ________

    ()

    -6

  8. The number of terms in the expression 3ab + 4c –9 is ________.

    ()

    three

  9. 4 x 1 = 4
  10. x + ( −x) = 0

    (a) True
    (b) False
  11. The co-efficient of ab in the term 15abc is 15.

    (a) True
    (b) False
  12. When y = −1, the value of the expression 2y − 1 is 3

    (a) True
    (b) False
  13. Sum of a - b + c and -a + b - c is zero.

    (a) True
    (b) False
  14. 3 x 3 = 9
  15. Find the numerical co-efficient of the following terms. Also, find the co efficient of x and y in each of the term: 3x, - 5xy, - yz, 7xyz, y, 16yx.

  16. A person has Rs.960 in denominations of Rs.1, Rs.5 and Rs.10 notes. The number of notes in each denomination is equal. What is the total number of notes?

  17. A cricket team won two matches more than they lost. If they win they get 5 points and for loss -3 points, how many matches have they played if their total score is 50.

  18. 2 x 5 = 10
  19. Add the expressions:
    (i) pq −1 and 3pq + 2
    (ii) 8x + 3 and 1 − 7x

  20. Simplify:100x + 99y – 98z + 10x + 10y + 10z – x – y + z

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