Class 8 Mathematics — Chapter 12: Tales by Dots and Lines
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise the most important Class 8 Mathematics questions from Chapter 12, "Tales by Dots and Lines" — 72 NCERT-aligned multiple-choice questions with answers and explanations. The set is split into 24 Easy, 24 Medium and 24 Hard, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams.
"Tales by Dots and Lines" is one of the chapters where problem-solving speed, formula recall and step-by-step reasoning really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+4 correct, −1 wrong, 0 skipped), training the same negative-marking accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Tales by Dots and Lines, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 8 Mathematics mastery score. A sample question is shown below; sign in free to see its answer and practise all 72.
Key concepts: Tales by Dots and Lines (Class 8 Mathematics)
This chapter is about making sense of data with a few well-chosen numbers and pictures. The mean, median and mode are three measures of the centre of a data set: the mean balances the values, the median is the middle value, and the mode is the most common one. The range measures spread. You also read and interpret bar graphs, line graphs and pie charts, choosing the right one for the story the data tells.
- Data
- A collection of facts or numbers gathered about something, which we organise, summarise and display to draw conclusions.
- Mean (average)
- The sum of all the values divided by how many there are; it 'balances' the data. The mean of 4, 6 and 8 is 18 ÷ 3 = 6.
- Median
- The middle value when the data is arranged in order; for an even number of values it is the average of the two middle ones.
- Mode
- The value that occurs most often. A data set can have one mode, more than one (bimodal), or none if no value repeats.
Try a sample question
One free sample from this chapter — sign in to check your answer and practise the rest.
The mean of 12, 15 and 18 is:
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See the answer and solution to this question, then practise all 72 questions (24 Easy · 24 Medium · 24 Hard) with timed scoring and instant feedback, plus the complete key-concept notes, formulas & exam tips. Sign in with Google — no card needed.
Start this chapter free →Tales by Dots and Lines — FAQs
What are the key concepts in Class 8 Mathematics Tales by Dots and Lines?+
This chapter is about making sense of data with a few well-chosen numbers and pictures. The mean, median and mode are three measures of the centre of a data set: the mean balances the values, the median is the middle value, and the mode is the most common one. The range measures spread. You also read and interpret bar graphs, line graphs and pie charts, choosing the right one for the story the data tells. Key ideas include Data, Mean (average), Median, Mode.
What does Class 8 Mathematics Chapter 12 (Tales by Dots and Lines) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "Tales by Dots and Lines" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "Tales by Dots and Lines" questions free to practise?+
Yes — sign in with Google to practise "Tales by Dots and Lines" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Tales by Dots and Lines" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
Are these "Tales by Dots and Lines" MCQs available with answers?+
Yes. This page shows one sample question so you can see the format; sign in free with Google to reveal the correct option and a step-by-step "Why" explanation for it, then practise all 72 questions with instant scoring.
Is there negative marking in the "Tales by Dots and Lines" quizzes?+
Yes — the timed quizzes use exam-grade marking: +4 for a correct answer, −1 for a wrong one and 0 for a skipped question, so you practise the same negative-marking discipline as CBSE Board exams.
Are these important questions for Tales by Dots and Lines?+
The set is curated to the NCERT syllabus and weighted toward the question patterns that actually appear in CBSE Board exams, across Easy, Medium and Hard — so it doubles as an "important questions" revision list for "Tales by Dots and Lines".