QUESTION BANK CLASS VIII MATHS
CHAPTER 1
Rational numbers
1)What is additive inverse of -7/8?
2)What is additive inverse of 11/3?
3)Multiplicative inverse of -7/8 is------
4)Write the rational number that is equal to its reciprocal.
5)Represent -4/9 on the number line.
6)How many rational numbers exist between two given rational numbers?
7)Find the rational number that is equal to its negative.
8)What is the multiplicative identity for multiplication of rational numbers?
9)Name the property used in the following expression7/8+6/5= 6/5+7/8
10)–(-2/9)=------
ANSWERS
1)7/8
2)-11/3
3)-8/7
4)1
5)Repsentation on negative side of number line.
6)Infinite
7)zero
8)1
9) commutative property for multiplication.
10)2/9
Chapter 2
LINEAR EQUATIONS
1)3P+5= 7 Find the value of p
2)b/3=11 find the value of b.
3)Solve 6a-23= -8a+45
4)1.6=y/1.5
5)The perimeter of a square is 13cm. What is the length of side?
6)3p=2p+18
7)17+6p=9
8)14y-8=13
9)what should be added to ¾ to get -5/6
10) What should be subtracted from -3/4 to get 7/8?
ANSWERS
1) P=2/3
2) b=33
3) a=34/7
4)y=2.4
5) length=3.25
6) p=18
7)p=-4/3
8) y=21/14
9) -19/12
10)p=1/8
Chapter 3
Under standing quadrilaterals
1) Draw a convex quadrilateral .
2) Draw a concave polygon of 5 sides.
3) What is the sum of the measures of exterior angles of a quadrilateral.
4) Find the number of sides of a regular polygon whose each exterior angle has a measure of 45◦
5) Find the measure of each exterior angle of a regular polygon of 15 sides.
6) ABCD is parallelogram angle B is equal to 50◦a What is measure of angle D?
7) A rectangle is a square. (True/False)
8) All kites are rhombuses (True / False)
9) Name the quadrilateral whose diagonals bisect each other.
10) Identify all the quadrilaterals that have four right angles.
Answers
1)
2)
3)360◦
4) 8
5) 24◦
6) 50◦
7) False
8) False
9) Square
10) Square and rectangle.
Chapter 5
Data handling
1) What is upper limit of 40-50.
2) What is the name of circle graph.
3) The name of unorganized form of data is------
4) When the die is thrown what is the probability of getting a prime number.
5) The height of the bars show ------of the class.
6) List the out comes tossing two coins together.
7) What is the probability of getting an ace from 52 cards ?
8) What is the probability of getting a spade ?
9 )What is random experiment?
10) Find the central angle for the information given below.
40 students speak Hindi out of 72 students.
Answers
1) 50
2) Pie chart
3) raw data
4) ½
5) frequency of the class.
6) HH, TT, TH , HT
7) 2/27
8) 13/52
9) Whose out come can not be predicted exactly in advance.
10) 200◦
Chapter 6
SQUARES AND SQUARES
1) What will be the unit digit of the squares 0f the 26387 .
2) without adding find the sum 1+3+5+7+9.
3) Find the square of 157.
4) How many numbers lie between squares of the numbers between 12 and 13.?
5) Find the square root of 6400.
6) Express 212 as sum of two consecutive integers.
7) Find the square of -125.
8) Find the perfect square numbers between 30 and 50.
9) Is 7928 a perfect square ? Justify your answer.
10) Find the number of digits in the square root of 4489 without any calculation.
Answers
1) 9
2) 25
3) 24649
4) 24
5) 220+221
6) 80
7) 15625
8) 36 and 49
9) no units digit is 8
10) 2
Chapter 7
Cubes and cube roots
1) Find the cube of -14.
2) Find the cube root of 8000 without calculation.
3) Cube of any odd number is even (True/False)
4) Perfect cube does not end with two zeros. (True/False)
5) There is no perfect cube which ends with 8. ( True/ False)
6) How many perfect cubes are there between 1 to 100.
7) Which is smallest Hardy Ramanujan number?
8) Find the smallest number by which 81must be divided to obtain a perfect cube.
9)Find the smallest number by which 100 must be multiplied to obtain a perfect cube.
10)Find the cube root of 17576 through estimation.
Answers cubes and cube roots
1)
2) 20
3) False
4) TRUE
5) True
6) 4
7) 1729
8) 3
9) 10
10) 26
Chapter 8
Comparing Quantities.
1) Find the ratio of 50m to 10km.
2) convert 2:3 to percentages.
3) find the selling price of an article with profit 5%. And C. P. .is 250 .
4)If 8% VAT is included in the prices, find the original price of a T V bought for Rs 13,500.
5) Find selling price if a profit of 5% is made on a fan bought for Rs 560 and expences of RS 40 made on its repairs.
6)Find the compound interest on rs 12600 for 2 years at 10% per annum compounded annually.
7) selling price of an article is 5400 over head expences is 500 what is cost price of the article.
8) Marked price of an article is Rs 6000 selling price of an article is 5800.. what is the discount.
9) 72% of 25 students are good in maths. How many are good in Mathematics.
10) cost of a saree is Rs 450 sales tax is 6.5 % find the bill mount.
Answers
1) 1:200
2) 200/3
3) 262.50
4) x+8x/100 =13500
X=500x25
X=12,500
5) 560+40=600
600x5/100 +30
Selling price 630
6) 12600(110/100x110/100)
Rs 1386
7) Rs 4900
8) 200
9) 18
10) Rs 479.25