Q81Written answer
All positive rational numbers lie between 0 and 1000.
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Solution:-
False.
There are infinite positive rational number on the right side of 0 on the number line.
NCERT Exemplar · Class 8 · Maths
Chapter 1: Rational Numbers
Practice each question, then open the answer or worked solution.
Questions
152 questionsQ82Written answer
The population of India in 2004 – 05 is a rational number.
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Solution:-
True.
The population of India can always be a whole number. Hence, it is also a rational number.
Q83Written answer
There are countless rational numbers between 5/6 and 8/9.
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Solution:-
True.
Q84Written answer
The reciprocal of x-1 is 1/x.
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Solution:-
False.
X-1 = 1/x
Then, reciprocal of 1/x = x/1 = x
Q85Written answer
The rational number 57/23 lies to the left of zero on the number line.
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Solution:-
False.
The given rational number is positive so it is lies to the right side of 0 on the number line.
Q86Written answer
The rational number 7/-4 is lies to the right side zero on the number line.
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Solution:-
False.
The given rational number is negative so it is lies to the left side of 0 on the number line.
Q87Written answer
The rational number -8/-3 lies neither to the right nor to the left of zero on the number line.
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Solution:-
False.
-8/-3 is written as 8/3 it is a positive rational number. So it is lies to the right side of 0 on the number line.
Q88Written answer
The rational numbers ½ and –1 are on the opposite sides of zero on the number line.
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Solution:-
True.
½ is positive rational number so it is lies to the right side of 0 on the number line.
-1 is negative rational number so it is lies to the left side of 0 on the number line.
Q89Written answer
Every fraction is a rational number.
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Solution:-
True.
Because rational numbers can be expressed in the p/q form and fraction is also a part of whole which can be expressed in the form of p/q.
Q90Written answer
Every integer is a rational number.
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Solution:-
True.
In integer denominator remain 1. So, every integer is a rational number.