Estimate the following product using general rule:
3427X556

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Solution

$s t e p - 1 : R o u n d o f f e a c h n u m b e r t o i t s g r e a t e s t p l a c e : 3427 i s e s t i m a t e d t o i t s n e a r e s t t h o u s a n d \Rightarrow 3000 556 i s e s t i m a t e d t o i t s n e a r e s t h u n d r e d \Rightarrow 600 s t e p - 2 : N o w, f i n d t h e p r o d u c t : \Rightarrow 3000 X 600 = 1800000 H e n c e, t h e e s t i m a t e d p r o d u c t = 1800000$

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