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Page 1
QUESTIONS
1. Data available in an unorganized form is called ____ data.
2. Data represented using circle is known as _______.
3. In the class interval 26-33, 33 is known as ______.
4. The number of times a particular observation occurs in a given data is called its
_______.
5. Numbers 1 to 15 are written on separate slips i.e. one number on one slip and
they are put in a box. Radha pick a slip from the box without looking at it. What
is the probability that slip bears an odd number?
6. A dice is thrown once. Find the probability of getting a multiple of 2 or 3.
7. A family plays a game with a dice. In a single thrown of dice, getting a prime
number means father wins and getting an even number means son wins. Find the
probability that both will win simultaneously.
8. Find the range of the data 8, 15, 51, 62, 8, 72, 0 and 35.
9. A bag contains 80 red balls, 30 white balls and few blue balls. Find the number
of blue balls in the bag if the probability of a getting a red ball is
?? ?? .
10. The given pie chart shows the percentage breakdown of 800 votes in student's
elections. How many votes did Reena receive?
11. A card is drawn from a well shuffled pack of 52 cards. Find the probability of
getting neither a red card nor a queen.
12. Cards are marked from 10 to 100. A card is chosen at random. What is the
probability of getting a perfect number?
13. Two coins are thrown simultaneously. Find the probability of getting atmost one
head.
14. Two dice are thrown simultaneously. Find the probability of getting the same
Page 2
QUESTIONS
1. Data available in an unorganized form is called ____ data.
2. Data represented using circle is known as _______.
3. In the class interval 26-33, 33 is known as ______.
4. The number of times a particular observation occurs in a given data is called its
_______.
5. Numbers 1 to 15 are written on separate slips i.e. one number on one slip and
they are put in a box. Radha pick a slip from the box without looking at it. What
is the probability that slip bears an odd number?
6. A dice is thrown once. Find the probability of getting a multiple of 2 or 3.
7. A family plays a game with a dice. In a single thrown of dice, getting a prime
number means father wins and getting an even number means son wins. Find the
probability that both will win simultaneously.
8. Find the range of the data 8, 15, 51, 62, 8, 72, 0 and 35.
9. A bag contains 80 red balls, 30 white balls and few blue balls. Find the number
of blue balls in the bag if the probability of a getting a red ball is
?? ?? .
10. The given pie chart shows the percentage breakdown of 800 votes in student's
elections. How many votes did Reena receive?
11. A card is drawn from a well shuffled pack of 52 cards. Find the probability of
getting neither a red card nor a queen.
12. Cards are marked from 10 to 100. A card is chosen at random. What is the
probability of getting a perfect number?
13. Two coins are thrown simultaneously. Find the probability of getting atmost one
head.
14. Two dice are thrown simultaneously. Find the probability of getting the same
number on both the dice.
15. Ravi scored 12, 92, 0 and 16 runs in the 4 innings. Find the average runs scored
by him.
16. Find the class mark of class Interval 1000-1100.
Wages (`)
Number of
workers
800-900 7
900-1000 13
1000-1100 2
1100-1200 8
1200-1300 10
17. In a multiple choice question with 5 options, Ranjeet randomly answered one
question. Find the probability that he answered it correctly.
18. In a hostel the following students speak different languages. If a pie chart is
formed, find the central angle made by Bengali speaking students.
Language
spoken
English Hindi Marathi Bengali
Number of
students
34 12 16 10
19. Find the probability that a leap year selected at random will have 53 Tuesdays.
20. Find the probability that a number selected from the numbers 1,2,3,4.....30, is a
perfect square number.
21. In a box of 600 electric bulbs, 15 bulbs are defective. One bulb is taken out at
random. Find the probability that it is a non-defective bulb.
The following pie chart shows the expenditure done by a family in different heads as
percentage of its income. Answer the questions from 22 to 27.
Page 3
QUESTIONS
1. Data available in an unorganized form is called ____ data.
2. Data represented using circle is known as _______.
3. In the class interval 26-33, 33 is known as ______.
4. The number of times a particular observation occurs in a given data is called its
_______.
5. Numbers 1 to 15 are written on separate slips i.e. one number on one slip and
they are put in a box. Radha pick a slip from the box without looking at it. What
is the probability that slip bears an odd number?
6. A dice is thrown once. Find the probability of getting a multiple of 2 or 3.
7. A family plays a game with a dice. In a single thrown of dice, getting a prime
number means father wins and getting an even number means son wins. Find the
probability that both will win simultaneously.
8. Find the range of the data 8, 15, 51, 62, 8, 72, 0 and 35.
9. A bag contains 80 red balls, 30 white balls and few blue balls. Find the number
of blue balls in the bag if the probability of a getting a red ball is
?? ?? .
10. The given pie chart shows the percentage breakdown of 800 votes in student's
elections. How many votes did Reena receive?
11. A card is drawn from a well shuffled pack of 52 cards. Find the probability of
getting neither a red card nor a queen.
12. Cards are marked from 10 to 100. A card is chosen at random. What is the
probability of getting a perfect number?
13. Two coins are thrown simultaneously. Find the probability of getting atmost one
head.
14. Two dice are thrown simultaneously. Find the probability of getting the same
number on both the dice.
15. Ravi scored 12, 92, 0 and 16 runs in the 4 innings. Find the average runs scored
by him.
16. Find the class mark of class Interval 1000-1100.
Wages (`)
Number of
workers
800-900 7
900-1000 13
1000-1100 2
1100-1200 8
1200-1300 10
17. In a multiple choice question with 5 options, Ranjeet randomly answered one
question. Find the probability that he answered it correctly.
18. In a hostel the following students speak different languages. If a pie chart is
formed, find the central angle made by Bengali speaking students.
Language
spoken
English Hindi Marathi Bengali
Number of
students
34 12 16 10
19. Find the probability that a leap year selected at random will have 53 Tuesdays.
20. Find the probability that a number selected from the numbers 1,2,3,4.....30, is a
perfect square number.
21. In a box of 600 electric bulbs, 15 bulbs are defective. One bulb is taken out at
random. Find the probability that it is a non-defective bulb.
The following pie chart shows the expenditure done by a family in different heads as
percentage of its income. Answer the questions from 22 to 27.
22. On which item, the expenditure is double than the expenditure on rent?
23. In which head, the expenditure is least?
24. If expenditure on food items is ` 5000, find the expenditure done by the family on
entertainment.
25. What is the ratio of the amount spent on education to that on the others?
26. Expenditure on which two heads are equal.
27. Find the difference of expenditures done on education and transport, if the
expenditure on rent is ` 4500.
In a school, a sports survey on 720 students shows the following results in the form
of a Pie chart. Answer the questions from 28 to 33.
Page 4
QUESTIONS
1. Data available in an unorganized form is called ____ data.
2. Data represented using circle is known as _______.
3. In the class interval 26-33, 33 is known as ______.
4. The number of times a particular observation occurs in a given data is called its
_______.
5. Numbers 1 to 15 are written on separate slips i.e. one number on one slip and
they are put in a box. Radha pick a slip from the box without looking at it. What
is the probability that slip bears an odd number?
6. A dice is thrown once. Find the probability of getting a multiple of 2 or 3.
7. A family plays a game with a dice. In a single thrown of dice, getting a prime
number means father wins and getting an even number means son wins. Find the
probability that both will win simultaneously.
8. Find the range of the data 8, 15, 51, 62, 8, 72, 0 and 35.
9. A bag contains 80 red balls, 30 white balls and few blue balls. Find the number
of blue balls in the bag if the probability of a getting a red ball is
?? ?? .
10. The given pie chart shows the percentage breakdown of 800 votes in student's
elections. How many votes did Reena receive?
11. A card is drawn from a well shuffled pack of 52 cards. Find the probability of
getting neither a red card nor a queen.
12. Cards are marked from 10 to 100. A card is chosen at random. What is the
probability of getting a perfect number?
13. Two coins are thrown simultaneously. Find the probability of getting atmost one
head.
14. Two dice are thrown simultaneously. Find the probability of getting the same
number on both the dice.
15. Ravi scored 12, 92, 0 and 16 runs in the 4 innings. Find the average runs scored
by him.
16. Find the class mark of class Interval 1000-1100.
Wages (`)
Number of
workers
800-900 7
900-1000 13
1000-1100 2
1100-1200 8
1200-1300 10
17. In a multiple choice question with 5 options, Ranjeet randomly answered one
question. Find the probability that he answered it correctly.
18. In a hostel the following students speak different languages. If a pie chart is
formed, find the central angle made by Bengali speaking students.
Language
spoken
English Hindi Marathi Bengali
Number of
students
34 12 16 10
19. Find the probability that a leap year selected at random will have 53 Tuesdays.
20. Find the probability that a number selected from the numbers 1,2,3,4.....30, is a
perfect square number.
21. In a box of 600 electric bulbs, 15 bulbs are defective. One bulb is taken out at
random. Find the probability that it is a non-defective bulb.
The following pie chart shows the expenditure done by a family in different heads as
percentage of its income. Answer the questions from 22 to 27.
22. On which item, the expenditure is double than the expenditure on rent?
23. In which head, the expenditure is least?
24. If expenditure on food items is ` 5000, find the expenditure done by the family on
entertainment.
25. What is the ratio of the amount spent on education to that on the others?
26. Expenditure on which two heads are equal.
27. Find the difference of expenditures done on education and transport, if the
expenditure on rent is ` 4500.
In a school, a sports survey on 720 students shows the following results in the form
of a Pie chart. Answer the questions from 28 to 33.
28. Which is the least popular game in the school?
29. How many students do not like football?
30. How many students play football and lawn tennis?
31. Find the central angle made by cricket.
32. How many students like either cricket or football?
33. Find the number of students who like badminton.
Study the given bar graph and answer the following questions from 34 to 36.
34. For how many hours the least number of students watch T.V.
35. How many students watch T.V. less than 4 hours?
36. How many students spend more than 4 hours watching T.V.?
Study the given histogram and answer the following questions from 37 to 41.
Page 5
QUESTIONS
1. Data available in an unorganized form is called ____ data.
2. Data represented using circle is known as _______.
3. In the class interval 26-33, 33 is known as ______.
4. The number of times a particular observation occurs in a given data is called its
_______.
5. Numbers 1 to 15 are written on separate slips i.e. one number on one slip and
they are put in a box. Radha pick a slip from the box without looking at it. What
is the probability that slip bears an odd number?
6. A dice is thrown once. Find the probability of getting a multiple of 2 or 3.
7. A family plays a game with a dice. In a single thrown of dice, getting a prime
number means father wins and getting an even number means son wins. Find the
probability that both will win simultaneously.
8. Find the range of the data 8, 15, 51, 62, 8, 72, 0 and 35.
9. A bag contains 80 red balls, 30 white balls and few blue balls. Find the number
of blue balls in the bag if the probability of a getting a red ball is
?? ?? .
10. The given pie chart shows the percentage breakdown of 800 votes in student's
elections. How many votes did Reena receive?
11. A card is drawn from a well shuffled pack of 52 cards. Find the probability of
getting neither a red card nor a queen.
12. Cards are marked from 10 to 100. A card is chosen at random. What is the
probability of getting a perfect number?
13. Two coins are thrown simultaneously. Find the probability of getting atmost one
head.
14. Two dice are thrown simultaneously. Find the probability of getting the same
number on both the dice.
15. Ravi scored 12, 92, 0 and 16 runs in the 4 innings. Find the average runs scored
by him.
16. Find the class mark of class Interval 1000-1100.
Wages (`)
Number of
workers
800-900 7
900-1000 13
1000-1100 2
1100-1200 8
1200-1300 10
17. In a multiple choice question with 5 options, Ranjeet randomly answered one
question. Find the probability that he answered it correctly.
18. In a hostel the following students speak different languages. If a pie chart is
formed, find the central angle made by Bengali speaking students.
Language
spoken
English Hindi Marathi Bengali
Number of
students
34 12 16 10
19. Find the probability that a leap year selected at random will have 53 Tuesdays.
20. Find the probability that a number selected from the numbers 1,2,3,4.....30, is a
perfect square number.
21. In a box of 600 electric bulbs, 15 bulbs are defective. One bulb is taken out at
random. Find the probability that it is a non-defective bulb.
The following pie chart shows the expenditure done by a family in different heads as
percentage of its income. Answer the questions from 22 to 27.
22. On which item, the expenditure is double than the expenditure on rent?
23. In which head, the expenditure is least?
24. If expenditure on food items is ` 5000, find the expenditure done by the family on
entertainment.
25. What is the ratio of the amount spent on education to that on the others?
26. Expenditure on which two heads are equal.
27. Find the difference of expenditures done on education and transport, if the
expenditure on rent is ` 4500.
In a school, a sports survey on 720 students shows the following results in the form
of a Pie chart. Answer the questions from 28 to 33.
28. Which is the least popular game in the school?
29. How many students do not like football?
30. How many students play football and lawn tennis?
31. Find the central angle made by cricket.
32. How many students like either cricket or football?
33. Find the number of students who like badminton.
Study the given bar graph and answer the following questions from 34 to 36.
34. For how many hours the least number of students watch T.V.
35. How many students watch T.V. less than 4 hours?
36. How many students spend more than 4 hours watching T.V.?
Study the given histogram and answer the following questions from 37 to 41.
37. What is the class size?
38. How many students obtain less than 20 marks?
39. How many students obtain 30 or more marks but less than 50?
40. How many students got more than 60 marks?
41. If the passing marks is 30, what is the number of failure students?
Study the given histogram and answer the following questions from 42 to 46.
42. Tell the age group in which the number of literate females is the highest.
43. What is the class width?
44. What is the lowest frequency?
45. In which age group literate females are least?
46. How many females are literate in the age group 20 to 30?
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FAQs on Mental Maths Questions and Answers: Data Handling - Mental Mathematics for Class 8
| 1. What is data handling in mental maths? |  |
Ans. Data handling in mental maths involves organizing, analyzing, and interpreting numerical information to make sense of the data.
| 2. How can data handling skills be useful in everyday life? | |
Ans. Data handling skills can help in making informed decisions, analyzing trends, managing finances, and interpreting information from various sources.
| 3. What are the key components of data handling in mental maths? | |
Ans. The key components of data handling in mental maths include collecting data, organizing data, representing data using graphs or tables, analyzing data, and interpreting results.
| 4. How can one improve their data handling skills in mental maths? | |
Ans. One can improve their data handling skills by practicing with real-life data sets, using online resources for data analysis, and seeking help from teachers or tutors if needed.
| 5. Why is data handling an important skill in mathematics? | |
Ans. Data handling is an important skill in mathematics as it helps in developing critical thinking, problem-solving abilities, and understanding of statistical concepts.
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