Question

Vijay Pratap international school Jaunpur
Half yearly examination
Class- 7
Subject- mathematics
Date- 30/11/2020
Time- 3 hrs. M.M.60
Q.1 fill in the blanks. (1×4=4marks)
(i) the sum of - 11 x and 7x is.......
(ii) .......÷(-75)=0
(iii) ..........×(-8)=96
(iv) the product of........ and (-1) is -35
Q.2 answer true or false (1×5=5marks)
(i) the sum of two monomials is always a monomial.
(ii) 0.2021×100=20.21
(iii) the smallest positive integers is 1
(iv) the additive inverse of zero is the number itself.
(v) the product of a negative and a positive integer may be zero.
Q.3 what are algebraic expressions, constant, variable , coefficient and polynomial . (5marks)
Q.4 attempt any seven short question. (3×7=21marks)
(I) solve the following questions
(a) 5x+2=3x+12 (b) 6(5x-2)+12=30 (c) 7+5x-3x=21
(ii)divide 7400 rupees among three people A, B and C in the ratio 3 : 5 :12.
(iii) Add:
(a) 6a+4b and 2a+5b
(b) 3ab- 9xy and 7ab+4xy
(iv) 80% of 650 boys in a school take commerce. how many boys take commerce?
(v) find the value of
(a) 20% of 650 (b) 4.5 % of 60cm (c) 140% of 75
(vi) find the value of x in each case:
(a) x+2
(2) = 256
(b). 5 3-x 3
(-6) × (-6) = (-6)
(c). x
49× (-7) =-343
(Vii) convert : (a) 46 m 18 cm to cm
(b) 503 gm to kg and g
(c) 292 ml to CL
(viii) Add:
(a) 0.0804, 0.00 924, 0.107 2, 0.0 2065
(b) 26.2 3, 4 , 0.003 , 9.01
(c) 6. 75 , 4.3 , 2.9 13
Q.5 attempt any five long question. ( 5×5= 25marks)
(i) simplify : (a) 3x-[x-(4x+3y)+5y]
(b) 2y- (3y+2)-6+(3y-8)
(ii) (a) A number decreased by 4 is equal to - 6. Find the number .
(b) 7 times a number decreased by 3 equal 18. find the number .
(iii) if the ratio of the length to the breadth of a rectangle be 5 : 3 and its perimeter is 144 m, find the length of the rectangle.
(iv) if the CP of 6 articles is equal to the SP of 4 articles find the gain percent.
(v) find the simple interest and the amount at simple interest in problem
(a) 184 rupees for 4 year at 5% per annum.
(b) 350 rupees for 4 years at 6% per annum.
(vi) express in power notation.
(a) 49/25 (b) 125 (c) -8/27



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Answer 1

Answer:

please give me a brainlests mark

Step-by-step explanation:

rupees for 4 years at 6% per annum.

(vi) express in power notation.

(a) 49/25 (b) 125 (c) -8/27

Answer 2

Answer:

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Step-by-step explanation:

69668+849302

*^89788+68686o86

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