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Wednesday, May 8, 2019

Data handling and simple equations

Grade 7 CBSE

Practice Set 1 for data handling and simple equation


Q 1 A cricketer scores the following runs in eight innings: 58, 76, 40, 35, 46, 45, 0, 100 Find the mean score.

Q2 The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the:
(i) The highest and the lowest marks obtained by the students.
(ii) Range of the marks obtained.
(iii) Mean marks obtained by the group

Q3The weight ( in kg) of 15 students of a class are:
38,42,35,37,45,50,32,43,43,40,36,38,43,38,47
1) find the mode and median of this data.
2) is there more than one mode?

Q4The performance of a student in 1st term and 2nd term is given. Draw a double bar graph choosing appropriate scale and answer the following

subject                        English  Hindi   Maths    Science    S.Science
1st term  (MM. 100)    67           72         88            81              73
2nd term  (MM (100)  70           65         95            85              55

Q5 Solve
  1. 5x +3=13
  2. 812x-312=12
Q6 Solve the following equation

a)-4(2+x)=8
b) 16=4 + 5(t+1)

Q7 Set up a equation: One fifth of a number minus 4 gives 3

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