Question

Arrange -5/7,7/12 ,-2/3and 11/18 in the ascending order of their magnitude also , find the difference between the largest and the smallest of these rational numbers. Express this difference as a decimal fraction correct to one decimal place​

Answer 1

Given : -5/7,7/12 ,-2/3and 11/18

To Find : Arrange in ascending order of their magnitude

the difference between the largest and the smallest of these rational numbers.

Solution:

-5/7, 7/12 ,-2/3and 11/18

magnitude

5/7  , 7/12  , 2/3  , 11/18

180/252    , 147/252 ,  168/252  ,  154/252

147/252 ,  154/252 ,  168/252   , 180/252

7/12   , 11/18  ,   2/3  ,    5/7

-5/7, 7/12 ,-2/3and 11/18

Largest 5/7

Smallest -2/3

Difference = 5/7 - (-2/3)

= 5/7 + 2/3

=  (15 + 14)/21

= 29/21

= 1.38

= 1.4

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