Class 8 Mathematics — Chapter 3: A Story of Numbers
72 practice questions · 24 Easy · 24 Medium · 24 Hard
Practise the most important Class 8 Mathematics questions from Chapter 3, "A Story of Numbers" — 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.
"A Story of Numbers" 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 A Story of Numbers, 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: A Story of Numbers (Class 8 Mathematics)
This chapter tells how humans learned to write numbers, from tally marks and additive systems like the Roman numerals to the powerful place-value system we use today. The big idea is a base: each system builds on landmark numbers that are powers of a chosen number n. You compare the Egyptian base-10, base-5 and Babylonian base-60 systems, meet binary (base 2), and see why the Hindu positional system with a zero made arithmetic easy.
- Number system
- A set of symbols and rules for writing numbers. Different civilisations built very different systems, but each one records the same counting numbers.
- Additive (tally) systems
- Early systems where a number is the sum of its symbols, such as sticks or the Roman numerals; there is no idea of place, so large numbers need many symbols.
- Roman numerals
- The symbols I=1, V=5, X=10, L=50, C=100, D=500, M=1000, combined by adding — with a smaller symbol before a larger one meaning subtraction (IV=4, IX=9, XL=40).
- Landmark numbers
- The special sizes a system groups by. In every base-n system they start at 1 and each is n times the previous, so they are the powers of n.
Try a sample question
One free sample from this chapter — sign in to check your answer and practise the rest.
Write the number 302 in Roman numerals.
Unlock the full chapter — free
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 →A Story of Numbers — FAQs
What are the key concepts in Class 8 Mathematics A Story of Numbers?+
This chapter tells how humans learned to write numbers, from tally marks and additive systems like the Roman numerals to the powerful place-value system we use today. The big idea is a base: each system builds on landmark numbers that are powers of a chosen number n. You compare the Egyptian base-10, base-5 and Babylonian base-60 systems, meet binary (base 2), and see why the Hindu positional system with a zero made arithmetic easy. Key ideas include Number system, Additive (tally) systems, Roman numerals, Landmark numbers.
What does Class 8 Mathematics Chapter 3 (A Story of Numbers) cover on XamBaaz?+
It covers 72 NCERT-aligned MCQs on "A Story of Numbers" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams.
Are these "A Story of Numbers" questions free to practise?+
Yes — sign in with Google to practise "A Story of Numbers" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "A Story of Numbers" 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 "A Story of Numbers" 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 "A Story of Numbers" 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 A Story of Numbers?+
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 "A Story of Numbers".