The best question of class 10th math . It is an important question . How can i solve this lengthy question by easy method Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions. (i) 13/3125 (ii) 17/8 (iii) 64/455 (iv) 15/1600 (v) 29/343 (vi) 23/(2352) (vii) 129/(225775) (viii) 6/15 (ix) 35/50 (x) 77/210
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Write down the decimal expansions of those rational numbers in Question 1 above which have terminating decimal expansions. (i) 13/3125 (ii) 17/8 (iii) 64/455 (iv) 15/1600 (v) 29/343 (vi) 23/(2352) (vii) 129/(225775) (viii) 6/15 (ix) 35/50 (x) 77/210 Q.2
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(i) 13/3125
13/3125 = 0.00416
(ii) 17/8
17/8 = 2.125
(iii) 64/455 has a Non terminating decimal expansion
(iv)15/ 1600
15/1600 = 0.009375
(v) 29/ 343 has a Non terminating decimal expansion
(vi)23/ (2352) = 23/(8×25)= 23/200
23/ (2352) = 0.115
(vii) 129/ (225775) has a Non terminating decimal expansion
(viii) 6/15 = 2/5
(ix) 35/50 = 7/10
35/50 = 0.7
(x) 77/210 has a non-terminating decimal expansion.