alok vidyashram summer vacation holiday homework 2012

ALOK VIDYASHRAM
SUMMER VACATION HOLIDAY HOMEWORK 2012
CLASS: VIII CBSE
SUBJECTS
ENGLISH
ENGLISH
GRAMMAR
MATHEMATICS
SCIENCE
HINDI
SOCIAL STUDIES
COMPUTER
OPT MATHS
HOMEWORK
Read a book of your choice and write the book review.
Stick pictures of people associated with Mount Everest with their general
introduction in your scrap book.
Write a survey or report.
Write a list of 20 synonyms and antonyms
1) Complete ex.
8.1 to 8.5, 9.1 to 9.4, 10.1 to 10.,1 1.1 to 11.5 Add: 1. 3a 2 +4a-
7, 2a 2 -8a-2, -5a 2 + 3a+9
1. 2x 3 y-7x 2 y 2 + 3xy 3 - 9, 4x 2 y 2 - xy 3 , 6x 3 y+5x 2 y 2
3. 2x(xy-3y) – 4, 3y(x+2y) 3, 9x 2 y + xy-5y 2 +1
Subtract:
1. 5a 4 +3a 3 b-2a 2 b 2 -ab 3 +ab 4 from 7a 4 -a 3 b+4a 2 b 2 -6ab 3 -3b 4
2. 2a(b+c)-3b(c+a)-4c(a+b) from 3ab+4ca-2bc
Divide:
1. (x2+7x+12) by (x+4)
2. (4x 6 -4x 5 -5x 4 -23x 3 -29x 2 -21x-18) by (2x 2 +x+3)
Solve the following problems:
3 .If a-b=6 and ab=4 find the value of a 2 +b 2
4. If a-b =a and ab=5, find the value of a 2 +b 2
5. If x+1/2=3, find the value of a 2 +b 2
6. If x-1/2=3 find the value of x 2 +1/x 2
7. If p-q=3 and p 2 +q 2 = 23 find pq
8.If (a-b)=5 and ab=6, find the value of x 3 -1/x 3
9.If (x+1/x)=9 find the value of x 3 +1/x 3
10.If x+y=3, find the value of x 3 +y 3 +9ab
11.If 2x+1/2x=4 find the value of 8x 3 +1/8x 3
12.If 3x-1/3x=5 find the value of 27x 3 -1/27x 3
Factorise:
1.X 2 +xy+xz+yz
2.2ax 2 +2axy+3bxy+3by 2 +4czx+4czy
3.A 2 x+abx+ac+aby+b 2 y+bc
4.X 4 +x2y 2 +y 4
5.4x 4 +y 4
6.A 4 +a 2 b 2 +b 4
7. 25x 4 +4x 2 y 2 +4y 4
Atomic model 1 to 20. Make two projects for the science exhibition
Types of Sandhi (Write in ex- book) 2. Lesson 6- Poem (explanation, our, ans)
3. Lesson 7- Qns and ans
1) Prepare a pocket book (Mini book) about the story of “Indian
Independence” (collect the information from books and internet). 2)
Draw an outline map of India and show the states and union Territories.
Complete all exercise of Ch-2 and draw all network model on cardboard paper.
Find the product:
3) (1+tan A) (1-tanA) (1+tan 2 A)
4) (sinθ-cosα) (sin 2 θ+sinθ.cosα +c0s 2 α)