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Class 7 Exam  >  Class 7 Tests  >  Mathematics (Maths) Class 7  >  Olympiad Test: Rational Numbers - Class 7 MCQ

Olympiad Test: Rational Numbers - Class 7 MCQ


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20 Questions MCQ Test Mathematics (Maths) Class 7 - Olympiad Test: Rational Numbers

Olympiad Test: Rational Numbers for Class 7 2024 is part of Mathematics (Maths) Class 7 preparation. The Olympiad Test: Rational Numbers questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test: Rational Numbers MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Rational Numbers below.
Solutions of Olympiad Test: Rational Numbers questions in English are available as part of our Mathematics (Maths) Class 7 for Class 7 & Olympiad Test: Rational Numbers solutions in Hindi for Mathematics (Maths) Class 7 course. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Olympiad Test: Rational Numbers | 20 questions in 30 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Mathematics (Maths) Class 7 for Class 7 Exam | Download free PDF with solutions
Olympiad Test: Rational Numbers - Question 1
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Which of the following is the product of (-7/8) and 4/21?

Detailed Solution for Olympiad Test: Rational Numbers - Question 1

ANSWER :- a

Solution :- the product of -7/8 and 4/21 is

[(-7) * (8)] * [(4) * (21)]

= - 1/6

Olympiad Test: Rational Numbers - Question 2
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What number should be added to (7/12) to get (4/15) ?

Detailed Solution for Olympiad Test: Rational Numbers - Question 2

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Olympiad Test: Rational Numbers - Question 3
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Rewrite −44/72 in the simplest form.

Detailed Solution for Olympiad Test: Rational Numbers - Question 3

The HCF for 44 & 72 is 4

divide the numerator & denominator by HCF 4 and rewrite the fraction
= (44/4) / (72/4)
= 11/18

Olympiad Test: Rational Numbers - Question 4
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What should be added to -5/11 to get 3/11 ?
Olympiad Test: Rational Numbers - Question 5
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Which of the rational number is positive?
Olympiad Test: Rational Numbers - Question 6
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Write the rational number whose numerator is 4 × (– 7) and denominator is (3 –7) × (15 – 11).
Olympiad Test: Rational Numbers - Question 7
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Fill in the blank using the appropriate option
Detailed Solution for Olympiad Test: Rational Numbers - Question 7

Olympiad Test: Rational Numbers - Question 8
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0 ____ −7/6
Olympiad Test: Rational Numbers - Question 9
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Olympiad Test: Rational Numbers - Question 10
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What number should be added to 3/8 to get -1/24? 
Detailed Solution for Olympiad Test: Rational Numbers - Question 10

3/8 + x = -1/24

x = -1/24 - 3/8

x = -10/24

x = -5/12

Olympiad Test: Rational Numbers - Question 11
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Detailed Solution for Olympiad Test: Rational Numbers - Question 11

Olympiad Test: Rational Numbers - Question 12
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From his home, Rahul walks 6/7 km towards school and then returns 5/6 km on the same way towards his home to reach a landmark. Where will he be now from his home? 
Detailed Solution for Olympiad Test: Rational Numbers - Question 12

We have km

Olympiad Test: Rational Numbers - Question 13
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Detailed Solution for Olympiad Test: Rational Numbers - Question 13

x = (-1*-15)/(3*6)

= 15/18

= 5/6

so reciprocal 1/x = 6/5

Olympiad Test: Rational Numbers - Question 14
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Product of two rational numbers is−8/9, one is−10/3, find other
Detailed Solution for Olympiad Test: Rational Numbers - Question 14

Let the two rational numbers be x and y.

Given that x = -10/3

Product of two rational numbers is -8/9.

⇒ x * y = -8/9

⇒ -10/3 * y = -8/9

⇒ -10y/3 = -8/9

⇒ -30y = -8

⇒ y = 4/15

Olympiad Test: Rational Numbers - Question 15
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Reduce  − 63/99  to the standard form.
Detailed Solution for Olympiad Test: Rational Numbers - Question 15

Since its -63/99, dividing both numerator and denominator by 9 we get -63/9=-7 and 99/9=11 .
So it's -7/11

Olympiad Test: Rational Numbers - Question 16
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Write the rational number whose denominator is the smallest 2 digit number and the numerator is the greatest 3 digit number.
Olympiad Test: Rational Numbers - Question 17
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The rational number 9/1 in integer is _____.
Detailed Solution for Olympiad Test: Rational Numbers - Question 17

If we have 1 in the denominator, the number is the number of numerator only. That is 9/1=9

Olympiad Test: Rational Numbers - Question 18
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NUmertor of  is
Olympiad Test: Rational Numbers - Question 19
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Which of the following is the reciprocal of the reciprocal of 4?
Detailed Solution for Olympiad Test: Rational Numbers - Question 19

Hence the reciprocal of 4 is 1/4 and its again reciprocal is 4. Option D is correct answer.

Olympiad Test: Rational Numbers - Question 20
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Find out two rational numbers between −3/4 and 0.
Detailed Solution for Olympiad Test: Rational Numbers - Question 20

Since -2/4=-½ which is greater than -¾ and less than 0 and -¼ is also greater than -¾ and less than 0.

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