Vitorr Classes
Vitorr Classes
Learn • Practice • Improve
HomeCurrent AffairsArticle
Current Affairs

Chapter 2 Rational Number

See more Vitorr Classes updates on Google Add Vitorr Classes as a Preferred Source for more of our fresh articles in eligible Google surfaces.
🔊
Listen to this article Uses a voice available on your device. English and Hindi are detected automatically.
Ready to listen 0 / 0

🔹 SECTION A: QUESTIONS


Q1. गुणनफल प्राप्त कीजिए (Find the Product)

(i) 4/7 × 21/36

(ii) -5/81 × 27/125

(iii) 143/125 × -40/169

(iv) 16/-21 × 14/5

(v) -7/24 × 48

(vi) 5/-18 × -9/20


Q2. मान निकालिए (Find the Value)

(i) -8 ÷ (16/-7)

(ii) -16/35 ÷ 4/25

(iii) -12/7 ÷ 18

(iv) -1/10 ÷ (16/-5)

(v) 78/-14 ÷ 26/21

(vi) 121/729 ÷ 110/-81


Q3. गुणन की क्रमविनिमेयता जाँच कीजिए (Check Commutativity of Multiplication)

4/17 × -35/36 और -35/36 × 4/17


Q4. गुणन की सहचर्यता जाँच कीजिए (Check Associativity of Multiplication)

-2/13, 8/15, 5/-16


Q5. वितरण गुणधर्म सत्यापित कीजिए (Verify Distributive Property)

2/-3 × (4/15 + -3/7)


Q6. उचित गुणधर्मों का प्रयोग करके मान ज्ञात कीजिए (Evaluate using properties)

(i) -4/7 × 8/15 + 2/5 × -1/6 + 8/15 × -3/7

(ii) 7/5 × -3/2 × 1/5 × 3 + 11/2 × 7/5

(iii) 4/13 × -11/18 × 13/4

(iv) 4/7 × 5/19 × 21/16 × 38/5


Q7. रिक्त स्थान भरें (Fill in the blanks)

(i) -7 का व्युत्क्रम ______ है

(ii) परिमेय संख्याएँ गुणन के अंतर्गत ______ हैं

(iii) शून्य का गुणात्मक प्रतिलोम ______ है

(iv) एक शून्येतर परिमेय संख्या का व्युत्क्रम एक ______ संख्या है

(v) ______ का व्युत्क्रम नहीं होता


Q8. प्रश्न (Word Problem)

दो परिमेय संख्याओं का गुणनफल -1/2 है।

एक संख्या 11/-14 है, दूसरी संख्या ज्ञात कीजिए।

Product of two rational numbers is -1/2.

One number is 11/-14. Find the other number.


Q9. व्युत्क्रम का उपयोग कीजिए (Use Reciprocal)

(i) 4/15 × (-8/5)

(ii) -3/2 × 9/11

(iii) 4/-11 × 33/16


Q10. रिक्त स्थान भरें (Fill in the blanks)

(i) -8/9 ÷ ______ = -1

(ii) ______ ÷ 5 = -1/7


Q11. गुणधर्म का नाम लिखिए (Name the Property)

(i) 4/7 × (-2/8 + 3/4) = 4/7 × -2/8 + 4/7 × 3/4

(ii) 7/13 × 1 = 7/13

(iii) -6/11 × 4/9 = 4/9 × -6/11

(iv) 3/17 × (-2/9 × 4/11) = (3/17 × -2/9) × 4/11

(v) 3/4 × 4/3 = 1


🔻 SECTION B: FINAL ANSWERS


Q1 Answers

(i) 1/3

(ii) -1/75

(iii) -8/25

(iv) -32/15

(v) -14

(vi) 1/8


Q2 Answers

(i) 7/2

(ii) -20/7

(iii) -2/21

(iv) 1/32

(v) -9/2

(vi) -11/90


Q3 Answer

LHS = RHS ✔ (Commutative property true)


Q4 Answer

LHS = RHS ✔ (Associative property true)


Q5 Answer

LHS = RHS ✔ (Distributive property true)


Q6 Answers

(i) -2/5

(ii) 7/5

(iii) -11/18

(iv) 3/2


Q7 Answers

(i) -1/7

(ii) Closed

(iii) Does not exist

(iv) Rational

(v) 0


Q8 Answer

7/11


Q9 Answers

(i) -2/3

(ii) -27/22

(iii) -3/4


Q10 Answers

(i) 8/9

(ii) -5/7


Q11 Answers

(i) Distributive property

(ii) Identity property

(iii) Commutative property

(iv) Associative property

(v) Multiplicative inverse

Revision Quiz
Finished reading? Test what you remember without leaving this page.
Generate a short bilingual quiz from this article.
⌨ Vitorr Typing Master Pro

Earn a verifiable online typing certificate

Turn reading into typing practice. Learn from single keys to words, sentences and paragraphs, practice with real Vitorr articles, pass the recorded final assessment, and become eligible for a Vitorr Classes typing certificate you can verify online and share anywhere. Certificate issue requires genuine performance, payment confirmation and Admin approval.

Keep your momentum going

Reading is only step one. Practice the topic, ask AI about anything unclear, or continue with more study material.