maths exercise 3.3 class 7 ncert solutions
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Answer 1
(a) Cat is the most popular pet.
(b) 8 students have dog as a pet.
Answer 2:
According to the given bar graph,
(i)(a) In 1989, 180 books were sold.
(b) In 1990, 475 books were sold.
(c) In 1992, 225 books were sold.
(ii)In 1990, about 475 books were sold and in 1992, about 225 books were sold.
(iii)In 1989 and 1992 fewer than 250 books were sold.
(iv)By reading the graph, we calculate that 180 books were sold in 1989.
Answer 3
For this ans. u have make a bar graph.
(a)Scale: 1 unit = 25 children
(b)(i) Fifth class has the maximum number of children and
Tenth class has the minimum number of children.
(ii) Ratio = Number of students in class sixthNumber of students in class eighthNumber of students in class sixthNumber of students in class eighth
= 120100120100 = 6565 = 6 : 5
Answer 4
for this also a bar graph
Difference of marks of 1st term and 2nd term
English = 70 – 67 = 3 Hindi = 65 – 72 = –7–7 Maths = 95 – 88 = 7
Science = 85 – 81 = 4 S. Science = 75 – 73 = 2
(i) He has most improved in Maths subject.
(ii) In S. Science subject, his improvement is less.
(iii) Yes, in Hindi subject, his performance has gone down.
Answer 5
bar graph,
(i)This bar graph represents the number of persons who are watching and participating in their favourite sports.
(ii)Cricket is most popular.
(iii)Watching sports is more preferred.
Answer 6
Data represented by double bar graph is as follows:

(i)Jammu has the largest difference in temperature i.e., Maximum temperature = 41oC41oC and Minimum temperature =26oC26oC.
∴∴ Difference = 41oC – 26oC = 15oC41oC – 26oC = 15oC
(ii)Jammu is the hottest city due to maximum temperature is high and Bangalore is the coldest city due to maximum temperature is low.
(iii)Maximum temperature of Bangalore – 28oC– 28oC
Minimum temperature of two cities whose minimum temperature is higher than the maximum temperature of Bangalore are Ahemedabad and Jaipur = 29oC29oC
(iv)Mumbai has the least difference in temperature i.e., Maximum temperature = 32oC32oC and Minimum temperature = 27oC27oC
∴∴ Difference = 32oC – 27oC = 5oC
(a) Cat is the most popular pet.
(b) 8 students have dog as a pet.
Answer 2:
According to the given bar graph,
(i)(a) In 1989, 180 books were sold.
(b) In 1990, 475 books were sold.
(c) In 1992, 225 books were sold.
(ii)In 1990, about 475 books were sold and in 1992, about 225 books were sold.
(iii)In 1989 and 1992 fewer than 250 books were sold.
(iv)By reading the graph, we calculate that 180 books were sold in 1989.
Answer 3
For this ans. u have make a bar graph.
(a)Scale: 1 unit = 25 children
(b)(i) Fifth class has the maximum number of children and
Tenth class has the minimum number of children.
(ii) Ratio = Number of students in class sixthNumber of students in class eighthNumber of students in class sixthNumber of students in class eighth
= 120100120100 = 6565 = 6 : 5
Answer 4
for this also a bar graph
Difference of marks of 1st term and 2nd term
English = 70 – 67 = 3 Hindi = 65 – 72 = –7–7 Maths = 95 – 88 = 7
Science = 85 – 81 = 4 S. Science = 75 – 73 = 2
(i) He has most improved in Maths subject.
(ii) In S. Science subject, his improvement is less.
(iii) Yes, in Hindi subject, his performance has gone down.
Answer 5
bar graph,
(i)This bar graph represents the number of persons who are watching and participating in their favourite sports.
(ii)Cricket is most popular.
(iii)Watching sports is more preferred.
Answer 6
Data represented by double bar graph is as follows:

(i)Jammu has the largest difference in temperature i.e., Maximum temperature = 41oC41oC and Minimum temperature =26oC26oC.
∴∴ Difference = 41oC – 26oC = 15oC41oC – 26oC = 15oC
(ii)Jammu is the hottest city due to maximum temperature is high and Bangalore is the coldest city due to maximum temperature is low.
(iii)Maximum temperature of Bangalore – 28oC– 28oC
Minimum temperature of two cities whose minimum temperature is higher than the maximum temperature of Bangalore are Ahemedabad and Jaipur = 29oC29oC
(iv)Mumbai has the least difference in temperature i.e., Maximum temperature = 32oC32oC and Minimum temperature = 27oC27oC
∴∴ Difference = 32oC – 27oC = 5oC
ishu310:
hey friend, I am having the maths book of class 7 and I have already done that exercise
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