Direction: What approximate value should come in place of the question mark(?) in the following question ? (Note that you are not expected to calculate the exact value).
- 
					 6888.009 - 487.999 - 87.989 =?
 
- 
                        
- 6000
 - 6570
 - 6430
 - 6310
 
 
Correct Option: D
 ? =  6888.009 - 487.999 - 87.989
∴  ? ≈  6888 - 488 - 88
 ⇒  ? ≈  6888 - 576  ⇒  ? ≈ 6312 ≈ 6310