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. Class-VII MATIIEMATICF)

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1) Writeequations or followingstaternents:-(a) 12subtractedromx gives 0 (b) 8 imes is 80(c) fyou add4 to one hird ofx, you get 20.

2) Write statements or following equations:-

(a) =16 (b) l - s : s (c ) 2p+7 4 (d)2(x- l )=e3) Solve:-

( a ) x+3=3x- (b ) (x -z )=zs ( c ) a{=11 ta lf=+(e) (3x-a)-a(zx-s) o

4) Irfan says hat he has 7 marbles more than five times the marbles Parmeet has. Irfan has 37marbles. ow many marbles oes Parmeet ave?

5) Think of a number. Add 11 o it and dividesum by 7 result s 9. What s the number?i r

6) If ; of a number s subtracted orm ; of the number, esult s 6. Find number.5 37) The sum of three consecutive ven numbers s 156. Find numbers.8) A man s 3 times as old as his son. After 15 years, e will be only twice as old as his son. Find

theirpresent ges.9) Add: i) 4a'?+b2 3ab, 3a2 7b2 +8ab and a2 b2 + 2ab

(ii) 14xy,-6xy,2xy,-7xy and2xy (iii) 6x'z-3y'? nd 5x2 2y2

10) Subtract: i) 4x'z 5xy+ y2 from 14x2 2xy -3y2(i i )2x-3y from4x-5y (ii i)a+b-3c from2c-a-2b

11) Simplify r Solve:-

(a) What hould e subtracted rom p3 7qt +5p-7 to getq2 2p-6?(b)Howmuch s -2a2+6b+9 exceed a2 2b+7?

(c)Fromthesumof x2 6x+8 and 4x2 +7x-6 subtract x2+5x+4.( d) f P=3x ' ?+7x+8 , =2x '+x -9 andR=-5x2 8x+ l .Showtha t P+Q+R=0

12) Eva lua re : - ( i )x ' ? -y ' ? ( i i ) 12x+3y- ]z [ i i )x3+v^2+z

i f x=-1 , !=z , z= -2 .2 313) Find degree nd ike terms n followingpolynomials.

(a) x'?-3y+2x2 xy+4 (b) 4xy+6xy2 91x-614) Separate onomial, inomial, rinomials nd polynomials:-

(a ) 2x'z 5x+7 (b) x2+y2 -22 +l 1c ; a2 b2 (d) 7x3 (e) 8 (f ) 2x+3

' Activity:- Designa Cross Word Puzzle ased n Ch - 6 and Ch - 7.