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Class 9 Mathematics Chapter 1 The World of Numbers MCQ Practice

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Chapter 1The World of Numbers

131 MCQsFocused chapter practice

DescriptionQuick chapter overview

SyllabusTopics covered clearly

Explore The World of Numbers, an important Class 9 Mathematics chapter, with concept-based MCQs. Develop calculation skills, logical reasoning and step-by-step problem solving and prepare confidently for assessments.

This chapter strengthens understanding of numbers through classification and properties. Students work with natural numbers, integers, rational numbers, irrational numbers, and real numbers, and develop fluency in representing, comparing, and reasoning with different kinds of numbers.

Sample Chapter MCQs

Showing 10 sample questions from this chapter.

01 Mathematics

Natural numbers are closed under:

A subtraction always

B division always

C addition

D subtraction into negatives

02 Mathematics

The rational number 11/2 in decimal form is:

A 1

B 0

C 5.5

D 13

03 Mathematics

The result of subtracting a negative number is the same as:

A adding zero

B multiplying by zero

C subtracting the positive number

D adding the corresponding positive number

04 Mathematics

(-12) + 5 =

A -7

B 7

C -17

D -5

05 Mathematics

The additive inverse of 3/4 is:

A 3/4

B -3/4

C 4/3

D 1/4

06 Mathematics

(-3) x 5 =

A 15

B -8

C -15

D 8

07 Mathematics

The number that is neither positive nor negative is:

A 1

B 0

C -1

D 10

08 Mathematics

Zero is an integer. Reason: Integers include negative numbers, zero and positive numbers.

A Both Assertion and Reason are true and Reason correctly explains Assertion

B Both Assertion and Reason are true but Reason does not correctly explain Assertion

C Assertion is true but Reason is false

D Assertion is false but Reason is true

09 Mathematics

0 + (-19) =

A 19

B 0

C -19

D -1

10 Mathematics

12 - (-6) =

A 6

B 18

C -18

D 0

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