Date:-13/04/21 subject:- Math

 Math Homework

Exercise1.4

Q2. Write Down the decimal expansion of those rational numbers in Question 1 above which have terminating

decimal expansion.

Q3. The following real numbers have decimal expansions as

given below. In each case, decide whether they are rational, and of the form p/q, what can you say about      

the prime factors of q ?

(i) 43.123456789

(ii) 0.12012001200012000...

             __________

(iii) 43.123456789

Math Classwork

Exercise 1.4

   Q1. Without actual performing the long division, state whether the following rational numbers will have a terminating decimal expansion or a non-terminating repeating decimal expansion:

(i)   13              (ii) 17          (iii) 64             (iv)   15   

     3125                   8                 455                   1600

(v)    29                 (vi)   23                (vii)  129            (viii)  6  

        343                     2³5²                        2²5⁷7⁵                   15

(ix) 35             (x)  77   

       50                   210