What approximate value should come in place of the question mark (?) in the following question ? (Note : You are not expected to calculate the exact value.)
$$ 105\cdot003+307\cdot993+215\cdot630$$=?
The answer can be calculated quickly by rounding off, hence we can approximate 105.003~105, 307.993~308, 215.66~215.6
Their sum = 105+308+215.6=628.6~330, the nearest option.
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