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BIRLA PUBLIC SCHOOL DOHA ,QATAR MATHEMATICS QUESTION BANK FOR CLASS SEVEN ALGEBRAIC EXPRESSIONS DATA HANDLING SIMPLE EQUATIONS ALGEBRAIC EXPRESSIONS If a=2 and b=3 find the value of a+b a²+ b² ab-a² If p=-2 q= -1 and z=5 find the value of: p²+q²- r² 3p²q + 5pq² + 2pqr p-q-r Write the numerical co-efficient of ab 7xyz z+4xz+3x 7xyz -6bc -12a+4b 4(l+b) -12a+4b Write the coefficient of x in 13xy y in -5y a in 6ab z in -7xyz y² in 8xy²z Identify the monomials,binomials and trinomials in the following -2xyz 5+3xy -5x² x +2y -3 2x+6x 100+2 Addition of algebraic expressions x-3y-2z,5x+7y-z,-7x-2y+4z 2x²-8xy +7y²-8xy²,2xy²+6xy-y²+3x² m²-4m +5,-2m²+6m-6,m²-2m-7 8a-6ab+5, -6a-ab-8b,-4a+2ab +3b Subtraction of algebraic expressions 5a +7b-2c from 3a-7b +4c a-2b-3c from -2a +5b-4c 4a+3b from 2a +2b-4 x²+y² from 5x²+3y²+2 5x²-3xy +y² from 7x² -2xy-4y² -11xy+6x-3 from 9xy-4x+4 From the sum of 3x²-5x+2 and -5x²- 8x +6 subtract 4x²- 9x +7 From the sum of 4x²- 6x+3 and -4x² -7x +5 subtract 3x²-8x+6 What should be added to a² +2ab+b² to get 4ab +b² What should be added to 5x²+6x-3 to get 3x+2 DATA HANDLING 1. The heights of 5 boys in a group are given below 152cm,170cm,156cm,164cm,158cm.find the mean height 2. Find the median of the following data(Tip:Arrange all the observations in ascending order) 31,35,27,29,32,43,37,41,34,28,36,44,45,42,30 14,3,15,8,10,13,21,22,5,27,11,12,19,18,19 9,25,32,51,7,16,37,50,0,13,19 27,21,12,17,25,11,19,20 3. Find the median of first 15 odd numbers 4. Find the mode of the given data showing the marks of students in a class test 12,7,9,10,19,12,18,15,9,8,12,16,15,19,12,13,12,8,12,8 5.Find the mode of a)5,5,7,8,8,9,7,9,10,10,11,9,13 b)110,120,130,120,110,140,130,120,140 6)The number of children who like different games is given below.Represent the data on a bar graph Sport Cricket Hockey Swimming Badminton Tennis No: of 250 190 150 240 180 children Q1)How would you choose a scale Q2)Which sport is liked by most children Q3)Find the ratio of students who like swimming to students who like cricket 7)The following table shows the sales of cars during 4 months of a year. Draw a bar graph that represents the correct data. Car January February March April Car 1 150 140 140 130 Q1)In which year is the sale of cars least? Q2)In which two years are the sale of cars equal? Q3)In which year is the sale of car maximum? Q4)What is the difference in sale in the month of March and April? 8. Draw a double bar-graph choosing an appropriate scale to represent the following Subject English Hindi Maths Science Social First 67 70 82 86 78 term Second 68 75 98 78 83 term Q1)In which subject has the child improved his performance most Q2)In which subject is the improvement least Q3) Has the performance gone down in any subject. 9)The number of girls and boys coming from different places of a city for a summer cricket coaching camp is as shown in the table. Place A B C D Girls 25 20 30 15 Boys 35 45 30 50 Represent this data by a Double bar graph. Q1)In which two places are number of boys and girls equal? Q2)In which place are the number of girls very less? Q3)What is the ratio of the number of girls to boys in place A? Q4)What do you infer from this graph? Simple Equations Check whether the value given in the bracket is a solution to the given equation or not a) 2n+5=10(n=5) b) 7n+3=21(n=2) c) 6p-4=20(p=4) Solve the equations by trial and error method 3z+5=11 2y-3=3 Write equations for the following statements a) The sum of a number t and 5 is 20 b) Six times d to which 4 is added c) Three fourth of g is 16 d) Ten times q is 40 e) If you take away 10 from x you get 25 f) If you add 4 to one-fifth of p ,you get 60 g) the number x divided by 4 gives 3 Write the following equations in statement form t+3=20 8m=24 2z=20 5 3p+9=39 z + 2=12 4 Set up an equation for the following 1. Raj says he has 4pens more than 5 times the pens Jeevan has.Raj has 54 pens.(Take p to be the number of pens Jeevan has) 2. Swethas father is 40 years old.He is 4 years older than six times Swethas age. (Take Swetha's age to be y) 3. The teacher tells the class that the highest mark obtained by a student in her class is thrice the lowest mark plus 8.The highest score is 83.(take the lowest score to be z) Solve the equation y-6=12 a+24=28 5p+9=24 4a+15=31 p =32 2 4f=28 d=4 3 6 4r=8 5 -p =13 5 ALL THE BEST!

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