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CBSE
Class 9
Mathematics
Ganita Manjari
The World of Numbers

Question Bank

Practice Hub

Question Bank: The World of Numbers

Structured practice
Question Practice

Practice chapter questions in a cleaner, exam-ready flow

Start with curated question sets, move into full module views when needed, and keep discovering related practice without losing your place in the chapter.

Question Bank - The World of Numbers

View all (89)
Q1.

What is the value of 5 + (-7)?

Single Answer MCQ
Q-00168559
View explanation
Q2.

If the temperature drops from 10 °C to -5 °C, what is the total change in temperature?

Single Answer MCQ
Q-00168560
View explanation
Q3.

What is (-4) + (-6)?

Single Answer MCQ
Q-00168561
View explanation
Q4.

Which of the following is true about the product of two negative integers?

Single Answer MCQ
Q-00168562
View explanation
Q5.

What is 0 - (-9)?

Single Answer MCQ
Q-00168563
View explanation
Q6.

What is the result of (-5) × 3?

Single Answer MCQ
Q-00168564
View explanation
Q7.

Calculate (-3) + 4 + (-2).

Single Answer MCQ
Q-00168565
View explanation
Q8.

What is the sum of (-12) and 5?

Single Answer MCQ
Q-00168566
View explanation
Q9.

If –2 × 4 = A, what is the value of A?

Single Answer MCQ
Q-00168567
View explanation
Q10.

Which of the following is an example of a proper fraction?

Single Answer MCQ
Q-00168568
View explanation
Q11.

What is the result of 5 - 9?

Single Answer MCQ
Q-00168569
View explanation
Q12.

What is the sum of 1/2 and 3/4?

Single Answer MCQ
Q-00168570
View explanation
Q13.

What is the value of 3 - (–7)?

Single Answer MCQ
Q-00168571
View explanation
Q14.

Which of the following represents a rational number?

Single Answer MCQ
Q-00168572
View explanation
Q15.

What is (-6) ÷ (-2)?

Single Answer MCQ
Q-00168573
View explanation
Q16.

What is the equivalent fraction of 2/3 with a denominator of 9?

Single Answer MCQ
Q-00168574
View explanation
Q17.

What happens when you multiply a fortune (positive integer) by a debt (negative integer)?

Single Answer MCQ
Q-00168575
View explanation
Q18.

Which of the following is an example of a negative rational number?

Single Answer MCQ
Q-00168576
View explanation
Q19.

If 6 – x = –3, what is the value of x?

Single Answer MCQ
Q-00168577
View explanation
Q20.

What is 5/6 - 1/2?

Single Answer MCQ
Q-00168578
View explanation
Q21.

Calculate the result of 4 × (-2) + 6 × (-3).

Single Answer MCQ
Q-00168579
View explanation
Q22.

If 2/5 is added to which of the following fractions equals 1?

Single Answer MCQ
Q-00168580
View explanation
Q23.

Subtract 7 from the sum of (-5) and (-4). What is the result?

Single Answer MCQ
Q-00168581
View explanation
Q24.

Which fraction is greater: 3/8 or 1/2?

Single Answer MCQ
Q-00168582
View explanation
Q25.

What is the value of -3/4 + 1/2?

Single Answer MCQ
Q-00168583
View explanation
Q26.

If p/q is a rational number, what does q ≠ 0 imply?

Single Answer MCQ
Q-00168584
View explanation
Q27.

Which of the following fractions is in its simplest form?

Single Answer MCQ
Q-00168585
View explanation
Q28.

Which operation would result in the largest value: 1/4 + 1/3 or 1/4 × 1/3?

Single Answer MCQ
Q-00168586
View explanation
Q29.

What is the product of -2/3 and 3/4?

Single Answer MCQ
Q-00168587
View explanation
Q30.

Which of the following is not a rational number?

Single Answer MCQ
Q-00168588
View explanation
Q31.

A fraction is represented as p/q. If p and q share 3 as a common factor, what can be simplified?

Single Answer MCQ
Q-00168589
View explanation
Q32.

What is one-to-one correspondence?

Single Answer MCQ
Q-00168590
View explanation
Q33.

What was the purpose of the Lebombo Bone?

Single Answer MCQ
Q-00168591
View explanation
Q34.

Which ancient artifact shows early evidence of prime number recognition?

Single Answer MCQ
Q-00168592
View explanation
Q35.

How did early civilizations in the Indus Valley manage trade?

Single Answer MCQ
Q-00168593
View explanation
Q36.

What significant mathematical concept did the Indian numeral system pave the way for?

Single Answer MCQ
Q-00168594
View explanation
Q37.

Which of the following is an ancient method of tracking numbers?

Single Answer MCQ
Q-00168595
View explanation
Q38.

Why was the need to count crucial for early humans?

Single Answer MCQ
Q-00168597
View explanation
Q39.

What numerical system allows counting in groups of 10?

Single Answer MCQ
Q-00168599
View explanation
Q40.

What does the Vedic literature suggest about ancient Indian mathematics?

Single Answer MCQ
Q-00168601
View explanation
Q41.

What is the significance of the Ishango Bone's arrangement of notches?

Single Answer MCQ
Q-00168603
View explanation
Q42.

Which number system did early humans NOT use?

Single Answer MCQ
Q-00168604
View explanation
Q43.

What does the term 'natural numbers' refer to?

Single Answer MCQ
Q-00168606
View explanation
Q44.

How did early agricultural practices influence the development of counting?

Single Answer MCQ
Q-00168608
View explanation
Q45.

What was a significant outcome of the development of a numeral system in ancient India?

Single Answer MCQ
Q-00168610
View explanation
Q46.

What kind of artifact was typically used by early humans to represent countable quantities?

Single Answer MCQ
Q-00168612
View explanation
Q47.

What role did agriculture play in the early development of mathematics?

Single Answer MCQ
Q-00168614
View explanation
Q48.

Who is credited with the formal transformation of void into a number?

Single Answer MCQ
Q-00168620
View explanation
Q49.

The term 'Śhūnya' in ancient Indian mathematics refers to what?

Single Answer MCQ
Q-00168621
View explanation
Q50.

Which of the following statements describes Brahmagupta's first law for zero?

Single Answer MCQ
Q-00168622
View explanation
Q51.

The Bakhśhālī Manuscript is important because it showed the transition from what to what?

Single Answer MCQ
Q-00168623
View explanation
Q52.

Which civilization used placeholders in their numbering system before the concept of zero was formalized?

Single Answer MCQ
Q-00168624
View explanation
Q53.

What concept in ancient Indian philosophy helped prepare the ground for accepting zero in mathematics?

Single Answer MCQ
Q-00168626
View explanation
Q54.

What mathematical operation does Brahmagupta's third rule about zero state?

Single Answer MCQ
Q-00168628
View explanation
Q55.

Which statement is true regarding the Indian philosophical influences on mathematics?

Single Answer MCQ
Q-00168631
View explanation
Q56.

Which of Brahmagupta's rules signifies that zero does not change a number's value when subtracted?

Single Answer MCQ
Q-00168633
View explanation
Q57.

Which mathematician's work laid the fundamental laws of arithmetic involving zero?

Single Answer MCQ
Q-00168635
View explanation
Q58.

What significant mathematical leap did Brahmagupta's definition of zero represent?

Single Answer MCQ
Q-00168637
View explanation
Q59.

Which philosophical text discusses the state of 'emptiness' related to Śhūnyatā?

Single Answer MCQ
Q-00168639
View explanation
Q60.

The change from using a blank space to a symbol in mathematics exemplified by the Bakhśhālī Manuscript is an example of what process?

Single Answer MCQ
Q-00168641
View explanation
Q61.

Which of the following is an example of an irrational number?

Single Answer MCQ
Q-00168676
View explanation
Q62.

Which of the following decimal expansions is terminating?

Single Answer MCQ
Q-00168677
View explanation
Q63.

What distinguishes an irrational number from a rational number?

Single Answer MCQ
Q-00168678
View explanation
Q64.

What is the decimal representation of 3/8?

Single Answer MCQ
Q-00168679
View explanation
Q65.

Which of the following statements is true about π?

Single Answer MCQ
Q-00168680
View explanation
Q66.

How can you identify if a decimal expansion of a rational number is repeating?

Single Answer MCQ
Q-00168681
View explanation
Q67.

How do irrational numbers affect the real number line?

Single Answer MCQ
Q-00168682
View explanation
Q68.

What will the decimal expansion of 22/7 be?

Single Answer MCQ
Q-00168683
View explanation
Q69.

Which of the following expressions represents an irrational number?

Single Answer MCQ
Q-00168684
View explanation
Q70.

Which fraction will give a repeating decimal when expressed in decimal form?

Single Answer MCQ
Q-00168685
View explanation
Q71.

What is the decimal expansion of an irrational number?

Single Answer MCQ
Q-00168686
View explanation
Q72.

For which of the following denominators will 5/15 give a terminating decimal?

Single Answer MCQ
Q-00168687
View explanation
Q73.

Which of the following numbers is not irrational?

Single Answer MCQ
Q-00168688
View explanation
Q74.

When a decimal is expressed as 0.142857..., how can it be represented as a fraction?

Single Answer MCQ
Q-00168689
View explanation
Q75.

If x is an irrational number, which of the following must also be irrational?

Single Answer MCQ
Q-00168690
View explanation
Q76.

Which of the following pairs represents non-repeating decimals?

Single Answer MCQ
Q-00168691
View explanation
Q77.

What is the first proof of the irrationality of a number?

Single Answer MCQ
Q-00168692
View explanation
Q78.

If a rational number has a denominator with the prime factorization of only 2s and 5s, what type of decimal expansion will it have?

Single Answer MCQ
Q-00168693
View explanation
Q79.

Which property is true for every irrational number?

Single Answer MCQ
Q-00168694
View explanation
Q80.

Which of the following gives a context for π as an irrational number?

Single Answer MCQ
Q-00168695
View explanation
Q81.

Determine the decimal expansion type of 4/9.

Single Answer MCQ
Q-00168696
View explanation
Q82.

Which of the following rational approximations is closest to π?

Single Answer MCQ
Q-00168697
View explanation
Q83.

What is the converted fraction form of the decimal 0.125?

Single Answer MCQ
Q-00168698
View explanation
Q84.

Which of these numbers cannot be a solution to a polynomial equation with integer coefficients?

Single Answer MCQ
Q-00168699
View explanation
Q85.

Which of the following decimals represents an irrational number?

Single Answer MCQ
Q-00168700
View explanation
Q86.

Which operation between one irrational number and one rational number can yield a rational number?

Single Answer MCQ
Q-00168701
View explanation
Q87.

What is the decimal expansion of 5/11?

Single Answer MCQ
Q-00168702
View explanation
Q88.

For a decimal fraction 0.625, which of the following represents its simplest fractional form?

Single Answer MCQ
Q-00168703
View explanation
Q89.

If a rational number has a denominator of 6, will its decimal expansion be terminating?

Single Answer MCQ
Q-00168704
View explanation
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