18. Estimate the sum and find the difference of acual and estimated value

The amount deposited by a businessman to his bank account for three consecutive months is $₹$17849500, $₹$ 21456800 and $₹$ 9976900. Find the total amount deposited to the nearest thousand and find the difference between the actual and estimated amount.

 

 

The estimated total amount $= ₹$.

 

The difference between actual and estimated amount $= ₹$.