Question

what is the estimated value of
618+561+372​

Answer 1

If you want to find the estimated value simply find the estimated value of all numbers I.e,

618=600

561=600

372=400

Addition= 600+600+400=1600

Hope it helps friend :-)

Answer 2

answer
618+561+372

618 is roanded off to 600
561 is rounded off to 600
372 is rounded off to 400

=600+600+400
=1600 and