Series RTEQ.P. Code 86/-2/0
Roll No.
RTE LEARN · CBSE PATTERN 2026–27
MATHEMATICS
Unit test · Ch 3: A Story of Numbers
Time allowed : 40 MinutesMaximum Marks : 20
General Instructions :
Read the following instructions carefully and follow them :
(i)This question paper contains 11 questions. All questions are compulsory.
(ii)This question paper is divided into three sections – A, B and C.
(iii)In Section A, Question numbers 1 to 5 carry 1 mark each.
(iv)In Section B, Question numbers 6 to 8 are very short answer (VSA) type questions carrying 02 marks each.
(v)In Section C, Question numbers 9 to 11 are short answer (SA) type questions carrying 03 marks each.
(vi)Draw neat figures wherever required. Take π = 22/7 wherever required, if not stated.
(vii)Use of calculators is not allowed.
SECTION A
This section comprises 5 questions of 1 mark each.
1.1
What are the symbols occurring in a written number system called?
2.1
Which ancient manuscript is the first known instance of numbers written using ten digits including zero?
3.1
What is a base-10 number system also called?
4.1
Write 27 in Roman numerals.
5.1
What are the landmark numbers of a base-5 number system?
SECTION B
This section comprises 3 very short answer (VSA) type questions of 2 marks each.
6.2
What is a number system? Why do we need a standard sequence to count?
7.2
Write 2367 in Roman numerals. Show your working.
8.2
What is a positional number system? Give one example.
SECTION C
This section comprises 3 short answer (SA) type questions of 3 marks each.
9.3
Explain the three key ideas in the evolution of number systems that led to the Hindu number system.
10.3
The Gumulgal people counted in 2s. Write the Gumulgal names for numbers 3, 4, 5 and 6. What did they call numbers greater than 6?
11.3
What is the advantage of a number system with a base over the Roman numeral system? Explain with reference to multiplication.
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