Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

Class 8 Mathematics by Full Circle

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Class 8 : Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

The document Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev is a part of the Class 8 Course Class 8 Mathematics by Full Circle.
All you need of Class 8 at this link: Class 8

Question 1: Multiply the reciprocal of (7/8) by the reciprocal of (-2/21)
Solution: ∵ Reciprocal of (7/8) is (-21/2)

∴ Reciprocal of (7/8) is (8/7)

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

Question 2: The product of two rational numbers is (-28/75). If one of the numbers is (14/25), find the other.
Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

Solution: ∵ Product of two numbers = -28/75

Any one of the rational numbers = 14/25

 The other number Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
Thus, the required rational number is (-2/3)

Question 3: Find three rational numbers between –3 and –4.
Solution: We have: A rational number between –3 and –4

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
A rational number between (–3) and -7/2

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

A rational number between (-7/2) and (-4)
Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev
Thus, the three rational numbers Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev are between (–3) and (–4).

Question 4: Find three  rational number between (1/2) and (–2)
Solution: We have: A rational number between  (1/2) and (–2)

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

 A rational number between 1/2 and (-3/4)

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

A rational number between (-3/4) and (–2)

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev

Thus, the three rational numbers Extra Questions and Practice Exercise- Rational Numbers Class 8 Notes | EduRev are between 1/2 and (–2).

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