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in Vedic Mathematics by (48.4k points)
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Multiply using appropriate formula:

(i) 87 x 10
(ii) 53 x 100
(iii) 432 x 1000
(iv) 64 x 5
(v) 72 x 50
(vi) 81 x 99
(vii) 99 x 999
(viii) 99 x 9

1 Answer

+1 vote
by (49.3k points)
selected by
 
Best answer

(i) 87 x 10 = 870

(ii) 53 x 100 = 5300

(iii) 432 x 1000 = 432000

(iv) 64 x 5 

= 64 x 10/2 

= 64/2 x 10 

= 32 x 10 

= 320

(v) 72 x 50 

= 72 x 100/2 

= 72/2 x 100

= 36 x 100 

= 3600

(vi) 81 x 99 

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