Q1 of 51 Page 25

Represent these numbers on the number line.

(i) 9/7 (ii) -7/5

In a rational number, the number below the bar i.e. the denominator tells the number of equal parts into which the first unit has been divided. The numerator tells ‘how many’ of these parts are considered.

(i) Here means 9 markings of each on the right of zero and starting from 0. The 9th marking is.


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(ii) Here means 7 markings of each on the left of zero and starting from 0. The 7th marking is.


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12

Verify that – (–x) = x for

x =

13

Write-

(i) The set of numbers which do not have any additive identity


(ii) The rational number that does not have any reciprocal


(iii) The reciprocal of a negative rational number.

 2

Represent on the number line.

 3

Write five rational numbers which are smaller than.