Estimate the following product by rounding off each number to its nearest ten:
67X33

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Solution

$E s t i m a t e d v a l u e o f 67 t o i t s n e a r e s t t e n = 70 E s t i m a t e d v a l u e o f 33 t o i t s n e a r e s t t e n = 30 N o w, t h e p r o d u c t \Rightarrow 70 \times 30 = 2100 H e n c e, t h e e s t i m a t e d p r o d u c t t o i t s n e a r e s t t e n = 2100$

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Estimate the following product by rounding off each number to nearest tens :

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